Guest guest Posted September 6, 2006 Report Share Posted September 6, 2006 I was merely cutting and pasting from the dictionary. If it is irrelevant..lol.....I'm not the one to confront with that. And as far as " massive scientific evidence " why is it still called a " theory? " Re: EVOLUTION: was Re: Salt , > 1.. Change in the genetic composition of a population during >successive generations, as a result of natural selection acting on the >genetic variation among individuals, and resulting in the development of >new species. I'm not sure why you posted that very long list of largely irrelevant definitions, but as you can see from the above definition, it is populations, not species, that evolve. That is why it explicitly notes the development of a new species, but says nothing about the cessation of the original species. > Gene, in answer to your question as to whether or not I think that >discounts evolution, absolutely not. However, I too search for the truth in >everything. One thing that I find interesting is that Darwin was a " self >taught " geologist. And I am probably far less an expert in evolution as >you are, but isn't geology the study of rocks and of the earth's crust and >such? The theory of evoultion in its current state does not rest on Darwin's findings (though they are still illustrative and supportive), and no theory in any science whatsoever depends on the background of its advocates and certainly not of a mere one of its advocates. > Darwin was a confessed Agnostic, he wasn't sure either way >whether God existed or not. What does his faith have to do with yours, mine, or anyone else's? > One of the arguments for Darwin was that >he " had to be sure of his theory, otherwise why would he have suffered >the persecution of the religious world? " I have never heard anyone argue for Darwin; I'm not even sure what it would mean to " argue for Darwin. " Likewise I would immediately dismiss anyone who argued for *evolution* on the basis of Darwin's willingness to endure any type of persecution, and if that was the only argument for evolution I would certainly dismiss the theory off the bat. Likewise, even if a good many of its proponents suggested that such an argument was evidence for evolution, I would be highly skeptical of the theory on the basis that most of its advocates were obvious kooks. Since that is not the case, I believe evolution takes place based on the massive scientific evidence and the absolute self-evidence of evolution that stares back at you when you look at how the inside of a cell is ordered. > And in using that question, I >have to say why would men for over the last 2000 years give their lives for >something they believed in, if they too weren't sure? This likewise does not prove that the faith they died for was true. Nevertheless, there is nothing mutually exclusive about evolution and Christianity, which is why millions of Christians believe in evolution. Chris -- The Truth About Cholesterol Find Out What Your Doctor Isn't Telling You: http://www.cholesterol-and-health.com Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 6, 2006 Report Share Posted September 6, 2006 On 9/6/06, <bible770@...> wrote: > > honestly, I've never met a Christian who believed in evolution. When someone comes > and says that the bibles says such and such, I always ask for chapter and verse. I'm > asking you where you get your information from on the Christians viewpoint on evolution, > as far as believing in it. > Sorry > As an example, I had two professors in college who taught aspects of evolution (one anthropologist and one geologist) and both were Christians. Neither saw any difficulty in reconciling the two. And these were people who had actually studied both the science and the religion, not just people having knee-jerk reactions. There doesn't have to be any conflict. What conflict exists is artificial and the result of ignorance or obduracy on one side or the other. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 6, 2006 Report Share Posted September 6, 2006 On 9/6/06, <bible770@...> wrote: > > I was merely cutting and pasting from the dictionary. If it is irrelevant..lol.....I'm not the > one to confront with that. And as far as " massive scientific evidence " why is it still called > a " theory? " > Is that really going to be the extent of the argument? That it's called a theory? If anyone actually has something to say then maybe this discussion is worthwhile, but otherwise why not just end it? has tried repeatedly to have an actual conversation and has been met with a brick wall of repetition, rants about communists and meaningless quipped retorts. How utterly boring. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 6, 2006 Report Share Posted September 6, 2006 On 9/6/06, Masterjohn <chrismasterjohn@...> wrote: > On 9/6/06, Brown <brobab@...> wrote: > > The > > foundation of the evolutionary model is the geologic column, > > This statement is absolutely absurd. Given the limitations of each > area of science, we would expect the absolute worst evidence for Name the specific gene sequences additionally created. And prove that any such changes are beneficial and necessary for the survival of the species. > evolution to come from paleontology. Unsurprisingly, paleontology is > not the leading line of evidence used by evolutionists to argue for > evolution. Again, unsurprisingly, your argument rests well over 90 > percent on paleontology. This is not the case. My biological arguments and paleontological arguments stand separately, neither one depends on the other for support, evolutionists routinely refer to the geologic column to find support that the minute variations are part of the grand principle of evolution. > > > >but it an > > elaborate and massive construct. > > I remain agnostic towards your interpretation of the paleontological > evidence because I don't know enough about it. You clearly know much > more about paleontology than you know about molecular biology, so I > don't take your thorough misrepresentation of the latter to > necessarily reflect on your representation of the former, but it gives > me pause before attributing any credibility to your paleontological > assessment. > > > Neither the fossil record nor real > > time obsevation and experimentation supports the elaborate construct. > > It is easy to see how evolutionary scientists have faith that the > > variations obseved in nature are manifistations of evolution displayed > > in classic text books, but the geologic column is a construct rife > > with massive omissions, massive reversals, circular and unvarifiable > > dating, the " universal principle of evolution " evaporates like a puff > > of mist. > > If the dating is as unreliable as you claim, then there is no evidence > *against* evolution from these datings either. Since paleontology is > not the primary argument for evolution and never has been, this does > not give any reasonable person rational license to ignore the piles > and piles of evidence accumulated from other fields. Numerous evolutionists take one side or the other and use one side to prove the other. Evolutionist biologists repeatedly use paleontology as GIGANTIC framework for interpreting the MINUTE variations observed in real time organisms. > I have repeatedly refuted numerous assertions of yours about what we > observe in real time, and you repeatedly have ignored them. This is merely microevolution, not the grand scale macroevolution. > > As an example, you stated unequivocally that when different species > interbreed, their offspring are sterile or reduced in either viability > or fitness. I gave you two examples directly refuting that -- the > hybrids between Townsend warblers and hermit warblers, and the hybrids > between tiger salamanders and axolotl salamanders. The first you > ignored with no mention. The second you engaged after I repeated it > three times, repeatedly noting your failure to engage it, but in doing > so, you argued that it was not an example of a mechanism of > macroevolution, but never admitted to the obvious fact that it was a > direct refutation about the viability of hybrid species. Hybrid species simply demonstrate that they are of the same kind, not that one kind was derived from another. This is irrelevant to the grand macrobiotic hypothesis. These are minute variations and recombination's, not great leaps of genetic changes. Crabs are crabs. Salamanders are salamanders. Proves nothing else. > > As a second example, you have repeatedly stated that " no new genetic > material " arises except adverse changes due to radiation or other > types of cellular damage, and that these " random, " as you erroneously > call them, changes are incapable of generating " new genetic material. " > I have listed numerous other mechanisms by which new genetic material > is incorporated into the genome, and you have flat-out ignored all of > them. Give the gene sequences that have been generated and the specific code affected. You must prove that the gene sequences were not pre-existing that were newly generated. Then you must prove that over successive generations, that code is not only beneficial for the survival of the new species but also viable enough to be spread into the gene pool. If you can catalog these new changes specifically, then we have somewhere to go. Otherwise there is no evidence of macroevolution on a grand scale. > > Your idea that macroevolution requires " new genetic material must be > introduced into offspring that was not in the ancestor, not merely > recombination of genes, but entirely new genetic material, " reaches > the height of absurdity. The very basis of the entire theme of > evolution is that forms of life do not appear suddenly ex nihilo, but > evolve from pre-existing forms of life. This applies to organisms > right down to genes. This is not so because, new organs must be fully functional to be beneficial to an organism. And the new code must not disrupt the rest of the functions of the organism. If a new heart chamber develops, for example, it must be connected to the properly to venal AND arterial connections AND the nerves must be connected right AND the valves must be in the right place AND it must not leak AND it must not be too large AND it must not constrict the flow of blood AND the new changes must not interfere with the functioning of other organs and organ systems, etc. By the time the organism makes complex new gene sequences, it will die do to waiting for the right combinations. This goes for one organ and organ system after another. Organ systems are very very complex and cannot stand a myriad of nonbenefical changes while waiting for the right combination of simultaneous developments. Observable beneficial variation that we do observe is minuscule to the massive simultaneous random additions that would have to be required to form wholly different organisms. > > If you look at proteins, what you see is the same types of homology > and analogy that you see in macroscopic anatomical structures, and it > is *abundantly* evident that genes and proteins are largely made by > reconstructing the same parts of other genes and proteins. There are > large superfamilies of proteins that involve the same basic protein > unit, and thus the same basic genetic unit, simply repeated over and > over again, arranged in different numbers per molecule or hinged > together at different orientations, certain small parts of which may > have degrees of variability where only several amino acids vary > between the proteins yet these amino acids dramatically change their > binding affinity. But getting these proteins to work together requires a vast array of complex code that would have to be disassembled and reassembled, to produce wholly new organs and organ systems, there is no observed mechanism for this. This would have to require entirely different mechanism than what we observe. > > Now, you would expect, then, that the *primary* mechanism of > evolutionary change would not be the " random " point mutations induced > by radiation that the body tries to prevent and fix as much as > possible -- although these are clearly a source of genetic variation > -- but you would instead expect it to occur through a mechanism of > domain shuffling. That is, taking large sections that code for > self-stable functional units of proteins, and mixing them together in > different ways. > > Sure enough, site-specific recombination does exactly that, and is > directly observed. As a DNA-repair mechanism, double strand breaks > are often repaired by taking the allele from the homologous but > *other* chromosome with the *other* allele, and using this allele to > copy the part that is missing from the first. Rarely are whole genes > copied this way. Often, only parts of genes are copied this way. > Thus, a *new* *different* gene is born. Not from randomly mutating > things in ways that might not have any functional utility, but by > taking one *part* of something that already has established functional > utiltiy, and combining it with something else that has established > functional utility. > > Although this process is most well-described and well-characterized in > fungi, if you do a search for " HLA gene conversion " on PubMed you will > see numerous reports of previously unidentified HLA genes in certain Previously unidentified does not prove to be new, additional material and the function of the new genes would have to be observed over generations. Are these just redundant genes that are there as filler? Do they have a distinct function? For macroevolution to occur, we must not only have new distinct material, but also functional and beneficial material that is dependent for the species survival and continues for successive generations so that it continues and increases the survivability of the new species, and the new species must not be able to breed again with its ancestor. > populations like island populations that appear to have been created > through this process, and at the very least plausibly attributed to > this process based on the fact that these *new* and *different* and > *completely functional* genes are clearly a rearrangement of > functional units taken from different genes and combined. Much more than this is required for macroevolution to occur. And the more complex the organism, the more complex will be the process of any point addition to the genetic code, there are more things to go wrong. > > Nevertheless, you argue that 1) there is no mechanism for genetic > transfer except random damage induced by radiation and 2) the simple > lack of clarity and inconclusiveness of the fossil record refutes all > other evidence for evolution, even though you yourself explicitly > state that it is inconclusive and therefore can *not* be evidence > against evolution. As I stated each branch has its separate problems, but evolutionists use one branch of evolutionary science to prove the other. > > Isn't it interesting that I say something new each time and you repeat > yourself, regardless of what I say? I really do not see anything significantly new in your successive discussions. Whatever the mechanisms we observe in variation, they must be interpreted through the observation of how those mechanisms play out in the gene pools. Your continued explanations of various genetic processes are not able to interpolate to change our observations of what is happening amongst populations of organisms throughout nature. What we see microscopically in the genes is totally dependent on how they play out in the gene pools of real life organism in nature. Apes are still apes and there is no evidence in the genes that they have been anything else, but that they exhibit limits to variation. Hybridization also exhibits limits to variation. Bacteria are still bacteria. For all the gene swapping and variation exhibited in bacteria, bacteria are still bacteria. I repeat this because that is what nature repeats over and over and over as long as we humans have been observing bacteria. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 6, 2006 Report Share Posted September 6, 2006 On 9/6/06, <bible770@...> wrote: > honestly, I've never met a Christian who believed in evolution. When >someone comes and says that the bibles says such and such, I always >ask for chapter and verse. I'm asking you where you get your information >from on the Christians viewpoint on evolution, as far as believing in it. I don't see how I can cite a chapter or verse from the bible to show that Christians believe in evolution. The Roman Catholic church's official position, for example, is that evolution is supported by science and not in conflict with the church's doctrine. I do not cite this as evidence that evolution is consistent with the Bible, nor do I deny that is consistent with the Bible; I'm merely pointing out that the Roman Catholic church, which is by far the most numerous Christian organization in the world, takes this stance, and thus most Roman Catholics who are taught this stance by the instructors in their faith also believe in the scientifically established concept of evolution. I'm sure this information is readily available in numerous polls but the Roman Catholic church's stance is in any case well known. That you have never met such a Christian reflects your limited exposure to the diversity of modes of thought that exist among Christians and suggests that you are familiar only with a relatively narrow type of Christianity that is, overall, not the norm, but exists very strongly in specific pockets of the U.S. I would suggest that you withold judgment on the issue of evolution until you are familiar with what it actually is. As demonstrated in the last few posts, you are unfamiliar with the concept, so how can you decide so easily whether it is consistent or inconsistent with your faith, or whether it is sensible or insensible, until you understand its basic concepts? Chris -- The Truth About Cholesterol Find Out What Your Doctor Isn't Telling You: http://www.cholesterol-and-health.com Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 6, 2006 Report Share Posted September 6, 2006 On 9/6/06, <bible770@...> wrote: > Is dirt or clay inorganic? Clay is as far as I know primarily composed of silica and alumina, which are inorganic. This is interesting as Becker proposed that life evolved from semi-conducting rocks and actually proposed a very intriguing mechanism. In any case, whether it is inorganic or organic with respect to carbon is not very important compared to the fact that the Bible explicitly states that man was drawn up from non-living matter rather than created out of nothing. There is nothing about evolution in the creation story per se, nor is there anything about the creation of bacteria, archaea, protists or fungi. Thus, anyone who insists that the absence of details from the creation story indicates that those details did not actually happen as part of creation is taking the completely and ridiculously unsupportable position that God did not create bacteria, archaea, protists or fungi, which means either that someone else created them, that they spontaneously generated of their own volition, or that they do not exist. Chris -- The Truth About Cholesterol Find Out What Your Doctor Isn't Telling You: http://www.cholesterol-and-health.com Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 6, 2006 Report Share Posted September 6, 2006 Hi , > I was merely cutting and pasting from the dictionary. If it is >irrelevant..lol.....I'm not the one to confront with that. Actually, you are the only person to confront about it, because whoever put it in the dictionary did not do so with the specific future event in mind that you would copy and paste all definitions into a thread on biological evolution regardless of their pertinence. And actually, the person or people who wrote those definitions made it very easy for you by listing the two relevant definitions with a header that read " Biology. " Usually when people reference information, they reference only the relevant part, and if they use a direct quote, they quote only the *most* relevant point and point most useful to quote, and then they add their own text to state their view of the relevance of that reference to the discussion. This is not only standard practice but also the most useful practice. > And as far as " massive scientific evidence " why is it still called >a " theory? " The word " theory " does not connote the degree to which the theory is substantiated. Thus, substantiation for a theory could be infinitely massive, such that one would colloquially say it was " proven, " and it would not be any less of a " theory " than when it originally had only modest support. Chris -- The Truth About Cholesterol Find Out What Your Doctor Isn't Telling You: http://www.cholesterol-and-health.com Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 6, 2006 Report Share Posted September 6, 2006 On 9/6/06, Brown <brobab@...> wrote: > > This statement is absolutely absurd. Given the limitations of each > > area of science, we would expect the absolute worst evidence for > Name the specific gene sequences additionally created. And prove that > any such changes are beneficial and necessary for the survival of the > species. Since you are quoting my statement on the limitations in the fossil record here, I am not sure which gene or genes you are asking me to catalogue. > >Again, unsurprisingly, your argument rests well over 90 > >percent on paleontology. > This is not the case. My biological arguments and paleontological > arguments stand separately, neither one depends on the other for > support, I didn't say they depended upon each other. I said that your argument rests mostly on paleontology, specifically your insistence that the dating is inconclusive. Your genetic arguments rest on the repeated erroneous statement that no new genetic material is introduced into the genome; thus, it is meritless because its premise is false. > evolutionists routinely refer to the geologic column to find > support that the minute variations are part of the grand principle of > evolution. From what I have seen, evolutionists do not trod out such arguments as " fossil x is 500 million years old; thus, evolution occurs. " Rather, the *relative* placement of fossils in the geological strata is used. In support of this, reference 1 trailing this post describes how numerous studies have shown that the placement of fossils within the geological strata are statistically significantly correlated with the expected placement of these species on the phylogenetic tree, that such analyses yield an increased strength of correlation when a greater number of fossils have accumulated, and that it is increased over broader spans of strata compared to narrow spans. Because of the inherent tendency toward error in the fossil record due to its incompleteness, the correlations would be expected to strengthen over larger spans. When an evolutionist provides introductory evidence for the general theory of biological evolution, that evidence does not, in my experience, emphasize something like hominid paleontology, which is difficult to interpret and takes place in a relatively narrow band of strata. In the second quoted paragraph of reference 1 below, primates were analyzed as a group. Their placement comapared to 24 similar taxa of vertebrates was tested, yielding a high correlation between the placement in geological strata and the placement of each of these groups on a phylogenetic tree. I suspect that if they conducted a similar study at the species level they would not get very good results. So, I perhaps misspoke in my last email by diminishing the use of paleontology. I think I said more clearly and correctly in my first email today that the relationships rather than the dating forms the primary evidence from paleontology. In any case, another point I have been trying to emphasize is that we have many other forms of evidence in addition to paleontology. > > If the dating is as unreliable as you claim, then there is no evidence > > *against* evolution from these datings either. Since paleontology is > > not the primary argument for evolution and never has been, this does > > not give any reasonable person rational license to ignore the piles > > and piles of evidence accumulated from other fields. > Numerous evolutionists take one side or the other and use one side to > prove the other. Perhaps you could provide an example? > Evolutionist biologists repeatedly use paleontology as GIGANTIC > framework for interpreting the MINUTE variations observed in real time > organisms. I'm not really sure enough of what you mean to respond. > > I have repeatedly refuted numerous assertions of yours about what we > > observe in real time, and you repeatedly have ignored them. > This is merely microevolution, not the grand scale macroevolution. My refutation of your assertions is microevolution? We cannot have a discussion if you bring each specific point back to the same broad criteria of proving macroevolution. In order to carry out an actual discussion, we must proceed point by point. Let's recapitulate some of these points: You have tautologically stated that we have not observed in real time a process that takes place over geologic time. This is, of course, a truism, albeit a meaningless one. I, in turn, have pointed out that direct observation is not a reasonable standard of evidence. If, for example, 12 people using your standard of evidence were placed on a jury, murderers would walk free everywhere. Yet this is not because our justice system uses a loose standard of evidence. We DO in fact care if we put innocent people in jail. Thus, we have due process that puts the burden of proof on the prosecution rather than the defense. Nevertheless, we do not hold the standard that the jury must directly observe the murder. The reason is because the combination of independent lines of evidence from different forms of forensic evidence that corroborate each other, witness testimony -- not necessarily witnesses who directly witnessed the murder -- and other forms of evidence are sufficient to themselves constitute the demonstration of guilt beyond a *reasonable* doubt. This is true despite the fact that the jury *never* witnesses the murder first hand. And this is not a matter of scientific curiosity; it is much more consequential, because we risk ruining an innocent man or woman's life. Yet you raise the burden of evidence for an academic matter to a standard vastly beyond the standard we use to put people in prison for life or to put them to death! You use a burden of evidence that, if we were to apply it to our justice system, would let virtually every single murderer back on the streets. So, I have offered that instead what we see is the mechanisms of macroevolution operating. I have pointed out, for example, that large-scale morphological changes and life mode changes can happen due to a single allele, giving the axolotl salamander as an example. My purpose was not to prove that the axolotl came from the tiger salamander or that humans came from amoebas, but was much more specific: to show that these major changes, which form the basis for changes across large taxa, are not necessarily due to changes in a large multiplicity of genes, but can be triggered by changes in even one gene. I have also pointed out that there are numerous mechanisms of introducing new genetic material, such as mobile genetic elements of various kinds, duplications, point-mutations, inversions, site-specific recombination, and so on. I have further pointed out that site-specific recombination provides a mechanism by which functional groups are exchanged instead of mutations made at random points that are likely to lead to non-functionality. This forms a basis for a rather methodical change. For example, a domain that might be a binding site for a specific protein or gene regulatory element could be conferred upon a preexisting protein that would confer upon it a new or expanded function. You have repeatedly dismissed all of this on the basis that it is " not macroevolution. " This is not the point: each of these points stand alone with specific purposes. Since you bring everything back to the single criteria that it must either prove macroevolution in one single shot or be useless, you fail to engage the discussion on any of these specific points and thus the discussion fails to progress. > > As a second example, you have repeatedly stated that " no new genetic > > material " arises except adverse changes due to radiation or other > > types of cellular damage, and that these " random, " as you erroneously > > call them, changes are incapable of generating " new genetic material. " > > I have listed numerous other mechanisms by which new genetic material > > is incorporated into the genome, and you have flat-out ignored all of > > them. > Give the gene sequences that have been generated and the specific code > affected. You must prove that the gene sequences were not > pre-existing that were newly generated. Then you must prove that over > successive generations, that code is not only beneficial for the > survival of the new species but also viable enough to be spread into > the gene pool. If you can catalog these new changes specifically, > then we have somewhere to go. Otherwise there is no evidence of > macroevolution on a grand scale. Again, you have *repeatedly* stated that " no new genetic material " is observed to be incorporated into genomes. I am not obliged to show a piece of evidence that stands itself as " evidence of macroevolution on a grand scale " to show that this single point of yours, on which you base your position on macroevolution, is blatantly false. All I need do is point out the various mechanisms by which new genetic material is introduced. As to gene sequences being pre-existing rather than " newly generated, " you are correct that unless we actually watch the mutation occur, this uncertainty exists. But there is only a certain degree of absurdity which we should tolerate to be applied to the interpretation of uncertainty. The introduction of variance into alleles by mutation is an established concept. Since we know of no other source for this variation, we *should* be able to conclude that the variance arises by mutation. It is as if I found a banana peel on the street and claimed it came from a banana tree, and you insisted that I had not sufficiently met that burden of proof, having not observed it hanging from a banana tree before it landed on my street. Exactly how do you propose genetic variance in the human population could possibly occur? Mitochondrial DNA evidence indicates that currently living humans all share a single common mother. The only known competing explanations for the origins of life are religious doctrines, most of which also posit a single mother, at least that I am familiar with. How, then, do you supposed that hundreds of alleles and polymorphisms of a single gene could arise except by mutations of that gene? There is no way to avoid the conclusion that they occurred through the observed process of mutation without applying an unreasonable degree of absurdity to your interpretation of the uncertainty. And no, it is not important to prove benefit in order to prove that new genetic material is introduced. All that is required to prove this is that new genetic material is introduced. Again, one point at a time. > > Your idea that macroevolution requires " new genetic material must be > > introduced into offspring that was not in the ancestor, not merely > > recombination of genes, but entirely new genetic material, " reaches > > the height of absurdity. The very basis of the entire theme of > > evolution is that forms of life do not appear suddenly ex nihilo, but > > evolve from pre-existing forms of life. This applies to organisms > > right down to genes. > This is not so because, new organs must be fully functional to be > beneficial to an organism. " New organs " do not need new sets of genes. They need a different mix of signals during their differentiation to modifiy which genes are silenced. Further, " fully functional " is relative. A sponge has some degree of celluar differentiation, but does not have true tissues. A jelly fish has a nerve net, but not a brain. Brains are essentially complexes of many nerve nets. The jelly fish did not have to have a whole brain in order to have nervous tissue; it simply needed rudimentary nervous tissue. In any case, your comment does not relate to my point. My point was that " domain shuffling " is a common theme in the evolution of genes. We do not observe that each protein is fullly unique. Instead, we observe a patchwork of distinct protein domains -- that is, functional units of a protein -- that are shuffled together in many ways. The Ig superfamily, for example, uses the repeating Ig unit over and over and over and over again. Even just the antibodies make TRILLIONS of proteins by combining this one, single Ig unit many times in an antibody with only a few amino acids in the variable portion that vary. And the antibodies are only one subclass of the Ig superfamily. Many other proteins use this same domain as a repeat, put together in different ways. As another example, vitamin D-binding protein, serum albumin, and alpha-fetoprotein are all essentially the same three domains, but they are hinged together at a different angle, making the domains organized in a different orientation, and thus altering the affinity of the binding site for certain molecules. It was not necessary to make each protein anew. All that was necessary was to swap large functional units around, and then make minor adjustments in the strings of amino acids that connect them. > And the new code must not disrupt the rest > of the functions of the organism. This is true, but all this means is that not all mutations will be successful. It does not mean that *no mutations will occur* and that *no new genetic material will be introduced.* In any case, the point being discussed here is whether, in your words, it is a requirement of macroevolution that " new genetic material must be introduced into offspring that was not in the ancestor, not merely recombination of genes, but entirely new genetic material. " The fact that a new code must not disrupt preexisting functions does not in any way indicate a requirement for totally new genetic material. If anything, it makes working with the pre-existing genetic code a requirement, because building on that existing code is less likely to introduce disruption. > If a new heart chamber develops, > for example, it must be connected to the properly to venal AND > arterial connections AND the nerves must be connected right AND the > valves must be in the right place AND it must not leak AND it must not > be too large AND it must not constrict the flow of blood AND the new > changes must not interfere with the functioning of other organs and > organ systems, etc. By the time the organism makes complex new gene > sequences, it will die do to waiting for the right combinations. This is ridiculous. If a new chamber of the heart is to develop, it does not need a new gene for each lipid in the membrane and for each three-dimensional coordinate a blood vessel or nerve travels. Each cell already has the same genome. There is no requirement for a gene for each chamber or for each part of the chamber. Instead, what is needed is a change in the mix of signals that influence differentiation and embryonic development. The direction of the nerves and blood vessels is not directed by genes! How many genes do you think we even have? We have about 20,000 and we'd need millions if we had the incomprehensibly inefficient system of development you are proposing. Nerves and blood vessels reach their target through chemical signaling systems that communicate directly with the target. No new gene required. > This > goes for one organ and organ system after another. Organ systems are > very very complex and cannot stand a myriad of nonbenefical changes > while waiting for the right combination of simultaneous developments. And if every minute portion of their placement was mapped out by an individual gene, this would be meaningful. Since it is not, it isn't. Moreover, what is being discussed here is whether " entirely new genetic material that was not present in the ancestor " is needed. On the contrary, your emphasis on the complexity of organs only proves the point that it is more possible to work within the pre-existing genome. > Observable beneficial variation that we do observe is minuscule to the > massive simultaneous random additions that would have to be required > to form wholly different organisms. Back to the axolotl: ONE ALLELE is responsible for the development of external gills and the transition from a terrestrial to an aquatic lifestyle. This is not a brand new gene, but a modification to a pre-existing gene. You are immensely overestimating the amount of simultaneous mutation that is required for major changes. > But getting these proteins to work together requires a vast array of > complex code that would have to be disassembled and reassembled, to > produce wholly new organs and organ systems, there is no observed > mechanism for this. This would have to require entirely different > mechanism than what we observe. The domain shuffling point offers the capacity to utilize pre-existing regulatory machinery. This is the entire point. If we needed to make " entirely new genetic material, " then we would need to build all these regulatory mechanisms at once. We do not. We can integrate a protein into a regulatory system simply by shuffling a domain that is related to that regulator system into that protein. " Wholly new organs " do not pop up out of nowhere. An organ is just cells that have differentiated to fulfill a certain function. Bacterial cells exhibit these types of characteristics when in a colony, even when considered unicellular. You are assuming that this organization is all extensively mapped out inside some type of central genetic directory, when in fact it relies to a very large extent on the communicatory nature of closely associated cells and their response to chemical and possibly electrical signals. > > Although this process is most well-described and well-characterized in > > fungi, if you do a search for " HLA gene conversion " on PubMed you will > > see numerous reports of previously unidentified HLA genes in certain > Previously unidentified does not prove to be new, additional material > and the function of the new genes would have to be observed over > generations. Not for the purpose for which this was brought up here, which was to demonstrate that new genetic material is introduced into the genome, which you have so far denied. > Are these just redundant genes that are there as filler? The HLA genes regulate what peptides are recognized as antigens. > Do they have a distinct function? For macroevolution to occur, we > must not only have new distinct material, but also functional and > beneficial material that is dependent for the species survival and > continues for successive generations so that it continues and > increases the survivability of the new species, and the new species > must not be able to breed again with its ancestor. Again, for discussion to occur, we must proceed one step at a time. We can discuss possible mechanisms for introducing the genetic changes that macroevolution would require separately from whether in each case they lead to an event that proves the direct observation of geological time processes in real time. > > populations like island populations that appear to have been created > > through this process, and at the very least plausibly attributed to > > this process based on the fact that these *new* and *different* and > > *completely functional* genes are clearly a rearrangement of > > functional units taken from different genes and combined. > Much more than this is required for macroevolution to occur. And the > more complex the organism, the more complex will be the process of any > point addition to the genetic code, there are more things to go wrong. Again, the point is the demonstration that new genetic material is introduced into the organism in an *organized* fashion. Not each specific point must in itself demonstrate the direct observation of a macroevolutionary event. > I really do not see anything significantly new in your successive > discussions. Whatever the mechanisms we observe in variation, they > must be interpreted through the observation of how those mechanisms > play out in the gene pools. Your continued explanations of various > genetic processes are not able to interpolate to change our > observations of what is happening amongst populations of organisms > throughout nature. What we see microscopically in the genes is > totally dependent on how they play out in the gene pools of real life > organism in nature. Apes are still apes and there is no evidence in > the genes that they have been anything else, but that they exhibit > limits to variation. Really. Not an ape mitochondria. Had you bothered to be responsive to the discussion of endosymbiotic theory, perhaps we would have gotten to discuss the mysterious presence of bacteria-like genes in mitochondria and chloroplasts. >Hybridization also exhibits limits to variation. > Bacteria are still bacteria. For all the gene swapping and variation > exhibited in bacteria, bacteria are still bacteria. I repeat this > because that is what nature repeats over and over and over as long as > we humans have been observing bacteria. As I pointed out in the last email, the evidence strongly suggests we are watching certain protists acquire new organelles like chloroplasts. This is more convincing evidence for the endosymbiotic theory of chloroplast origins than the fact that you do not see bacteria randomly morphing into other beings is evidence that these changes do not take place. You are aware, of course, that evolutionary theory does NOT predict that we would see apes producing anything other than apes. Your claim in an yesterday's email was that the situation is different for bacteria because of their rapid regeneration; I pointed out that this was not so, and we should see the most rapid development in protists, who have the basic rudimentary requirements such as larger amounts of DNA, mitochondria and so on, who do not produce on a rapid scale. And I pointed out endosymbiosis as one such mechanism. I do not recall seeing a response from you on this point. Chris ======= REFERENCE 1 http://www.talkorigins.org/faqs/comdesc/section1.html#chronology The most scientifically rigorous method of confirming this prediction is to demonstrate a positive corellation between phylogeny and stratigraphy, i.e. a positive corellation between the order of taxa in a phylogenetic tree and the geological order in which those taxa first appear and last appear (whether for living or extinct intermediates). For instance, within the error inherent in the fossil record, prokaryotes should appear first, followed by simple multicellular animals like sponges and starfish, then lampreys, fish, amphibians, reptiles, mammals, etc., as shown in Figure 1. Contrary to the erroneous (and unreferenced) opinions of some anti-evolutionists (e.g. Wise 1994, p. 225-226), studies from the past ten years addressing this very issue have confirmed that there is indeed a positive corellation between phylogeny and stratigraphy, with statistical significance (Benton 1998; Benton and Hitchin 1996; Benton and Hitchin 1997; Benton et al. 1999; Benton et al. 2000; Benton and Storrs 1994; Clyde and Fisher 1997; Hitchin and Benton 1997; Huelsenbeck 1994; Norell and Novacek 1992a; Norell and Novacek 1992b; Wills 1999). Using three different measures of phylogeny-stratigraphy correlation [the RCI, GER, and SCI (Ghosts 2.4 software, Wills 1999)], a high positive correlation was found between the standard phylogenetic tree portrayed in Figure 1 and the stratigraphic range of the same taxa, with very high statistical significance (P < 0.0001) (this work, Ghosts input file available upon request). As another specific example, an early analysis published in Science by Mark Norell and Novacek (Norell and Novacek 1992b) examined 24 different taxa of vertebrates (teleosts, amniotes, reptiles, synapsids, diapsids, lepidosaurs, squamates, two orders of dinosaurs, two orders of hadrosaurs, pachycephalosaurs, higher mammals, primates, rodents, ungulates, artiodactyls, ruminants, elephantiformes, brontotheres, tapiroids, chalicotheres, Chalicotheriinae, and equids). For each taxa, the phylogenetic position of known fossils was compared with the stratigraphic position of the same fossils. A positive correlation was found for all of the 24 taxa, 18 of which were statistically significant. Note that the correlation theoretically could have been negative. A statistically significant negative correlation would indicate that, in general, organisms rooted deeply in the phylogeny are found in more recent strata—a strong macroevolutionary inconsistency. However, no negative correlations were observed. [snip] Additionally, if the correlation between phylogeny and stratigraphy is due to common descent, we would expect the correlation to improve over longer geological time frames (since the relative error associated with the fossil record decreases). This is in fact observed (Benton et al. 1999). We also would expect the correlation to improve, not to get worse, as more fossils are discovered, and this has also been observed (Benton and Storrs 1994). ============== -- The Truth About Cholesterol Find Out What Your Doctor Isn't Telling You: http://www.cholesterol-and-health.com Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 6, 2006 Report Share Posted September 6, 2006 About Dr. Lynn Margulis and her work Acquiring Genomes " Probably her most important scientific contribution is the endosymbiotic theory of the origin of mitochondria as separate organisms that long ago entered a symbiotic relationship with eukaryotic cells through endosymbiosis (see also symbiogenesis). " Cute and creative. The evolutionary model keeps evolving. A little observation mixed with massive amounts of conjecture about supposed millions of years worth of assumptions. There continue to be conflicting speculive renditions. A flattering review says, " The result of thirty years of delving into a vast, mostly arcane literature, this is the first attempt to go beyond – and reveal the severe limitations of – the dogmatic thinking that has dominated evolutionary biology for almost three generations. Lynn Margulis, whom E.O. called 'one of the most successful synthetic thinkers in modern biology,' presents a comprehensive and scientifically supported theory that directly challenges the assumptions we hold about the diversity of the living world. " I admit it is a cool idea and creative synthesis. Notice how it " directly challenges directly challenges the assumptions we hold about the diversity of the living world. " This is an example how evolutionists have greatly diverge and disagree as to the causes and effects regarding presumed eons of unseen living development, yet for all the disagreement as to what is or were the mechanisms of presumed evolution, it happened. The mechanisms are in debate. What theoretical organisms transformed into which is in debate. Whether evolution of totally new kinds was gradual or sudden is in debate. Disagreement abound, and radical new explanations that supplant the previous explanations rise up in triumph. Yet let an evolutionary scientist conclude through years of his own evolutionary research that evolution is not possible, and see how quickly he is dethroned! Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 6, 2006 Report Share Posted September 6, 2006 As a result of this recent conclusion that merely 20000 genes contain viable information for the blueprint of life, conclusions are being made that we really still know very little about genetics and that there are other factors which control traits such as RNA coexisting with DNA. Since we know so little about the actual functions of the genetic code, it seems premature to even use arguments referring to genes, therefore it may be more reasonable to discuss traits. One recent article states that as a result of the discovery that only 25000 genes affect heredity, there is especially little we know about how genetics relate to the genes. Genetics was a field that existed long before the discovery of genes, and now it seems that genes are not all that we thought they were. There seem to be other controlling factors that we do not yet understand. In that case, to claim that genes contain the mechanisms to induce whole new organs and organism is sorely premature, and a leap of unobserved conjecture. Seeing is believing, and we are not seeing evolution on a grand scale. In spite of all this new information, organisms are not observed to perform the great feats of transformation attributed to them, only small everyday kinds of things which are still amazing none the less. > If a new heart chamber develops, > for example, it must be connected to the properly to venal AND > arterial connections AND the nerves must be connected right AND the > valves must be in the right place AND it must not leak AND it must not > be too large AND it must not constrict the flow of blood AND the new > changes must not interfere with the functioning of other organs and > organ systems, etc. By the time the organism makes complex new gene > sequences, it will die do to waiting for the right combinations. This is ridiculous. If a new chamber of the heart is to develop, it does not need a new gene for each lipid in the membrane and for each three-dimensional coordinate a blood vessel or nerve travels. Each cell already has the same genome. There is no requirement for a gene for each chamber or for each part of the chamber. Instead, what is needed is a change in the mix of signals that influence differentiation and embryonic development. The direction of the nerves and blood vessels is not directed by genes! How many genes do you think we even have? We have about 20,000 and we'd need millions if we had the incomprehensibly inefficient system of development you are proposing. Nerves and blood vessels reach their target through chemical signaling systems that communicate directly with the target. No new gene required. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 7, 2006 Report Share Posted September 7, 2006 On 9/6/06, Brown <brobab@...> wrote: > About Dr. Lynn Margulis and her work Acquiring Genomes [...] > Cute and creative. The evolutionary model keeps evolving. Of course it does. This is what science does. New observations lead to new hypotheses, which in turn lead to knew experiments and collections of data that lead to the development of new theories or expansion or rendition of old ones. Like every other science. > A little > observation mixed with massive amounts of conjecture about supposed > millions of years worth of assumptions. There continue to be > conflicting speculive renditions. > > A flattering review says, > > " The result of thirty years of delving into a vast, mostly arcane > literature, this is the first attempt to go beyond – and reveal the > severe limitations of – the dogmatic thinking that has dominated > evolutionary biology for almost three generations. Lynn Margulis, whom > E.O. called 'one of the most successful synthetic thinkers in > modern biology,' presents a comprehensive and scientifically supported > theory that directly challenges the assumptions we hold about the > diversity of the living world. " I think you should give authors and dates for these quotes. This review must be from the early or mid-1980s. This is what Freeman, _Biological Science_ (2005) has to say: " In 1981 Lynn Margulis expanded on a radical hypothesis -- first proposed in the nineteenth century -- to explain the origin of the mitochondria. " Then, after presenting a short summary of the large amount of circumstantial evidence that supported its plausibility, it goes on: " Although these data are impressive, they are only consistent with the theory. Stated another way, they do not exclude other explanations. Years after Margulis began to champion this theory, however, data emerged that persuaded virtually all biologists that the endosymbiosis theory was correct. " Additionally, _Molecular Biology of the Cell_ (2004), the lead author of which is Bruce Alberts, the head of the National Academy of the Sciences, has a large section on the genetics of the mitochondria and chloroplasts, which uses the endosymbiosis theory because it is overwhelmingly supported by the genetics of these organelles and has overwhelming power to explain the genetics of these organelles. So, you're review in which the author states that the theory directly challenges mainstream assumptions is certainly out of date. If your purpose is to show that it directly challenged assumptions at one time and eventually came to dominate, then I acknowledge that, as that is exactly what happens in all science. > I admit it is a cool idea and creative synthesis. > Notice how it " directly challenges directly challenges the assumptions > we hold about the diversity of the living world. " Held. 25 years ago. > This is an example how evolutionists have greatly diverge and disagree > as to the causes and effects regarding presumed eons of unseen living > development, yet for all the disagreement as to what is or were the > mechanisms of presumed evolution, it happened. Only virtually everyone accepts the 19th century endosymbiotic theory of mitochondria and chloroplasts as expanded on by Margulis in 1981. > The mechanisms are in > debate. What theoretical organisms transformed into which is in > debate. Whether evolution of totally new kinds was gradual or sudden > is in debate. Disagreement abound, and radical new explanations that > supplant the previous explanations rise up in triumph. Yet let an > evolutionary scientist conclude through years of his own evolutionary > research that evolution is not possible, and see how quickly he is > dethroned! Can you give an example of an evolutionist who comes to this conclusion and has published a coherent explanation? Chris -- The Truth About Cholesterol Find Out What Your Doctor Isn't Telling You: http://www.cholesterol-and-health.com Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 7, 2006 Report Share Posted September 7, 2006 On 9/7/06, Brown <brobab@...> wrote: > As a result of this recent conclusion that merely 20000 genes contain > viable information for the blueprint of life, conclusions are being > made that we really still know very little about genetics and that > there are other factors which control traits such as RNA coexisting > with DNA. There are a number of mechanisms we already know of to explain this. We might not necessarily understand every single detail of how these mechanisms relate to these phenomena, but we have already documented that: -- We possess machinery necessary to recombine genes from gene segments. This is, for example, how the trillions of unique antibodies and T cell receptors are made out of a fairly small amount of genetic material. -- After mRNA is translated, it can be spliced in different, controlled ways. This is, for example, how each subclass of antibody specific for a particular antigen can be made into an IgG, IgM, IgD, IgE, IgA, or any of the various subclasses thereof, all drawn from the same gene specific for that antibody, which was one of trillions of genes to be manufactured within the cell by recombining gene segments. -- It is also conceivable that reading frame shifts -- where the reading of the code begins at a different place so the gene is read differently -- could be a regulated process allowing us to read more proteins. > Since we know so little about the actual functions of the > genetic code, We actually do know a lot about the genetic code. The fact that there is much more we don't know does not negate what we do know. We do know, for example, that genes are a basic unit of heredity, that genes are required to code for proteins, many of the molecular details of these processes, and so on. None of this is negated by the revelation that we have not discovered everything yet. >it seems premature to even use arguments referring to > genes, therefore it may be more reasonable to discuss traits. One > recent article states that as a result of the discovery that only > 25000 genes affect heredity, there is especially little we know about > how genetics relate to the genes. Genetics was a field that existed > long before the discovery of genes, and now it seems that genes are > not all that we thought they were. There seem to be other controlling > factors that we do not yet understand. In that case, to claim that > genes contain the mechanisms to induce whole new organs and organism > is sorely premature, and a leap of unobserved conjecture. If this is true, your best argument is not that macroevolution can not occur, but simply that we may or may not have discovered its mechanisms. Your argument of irreducible complexity has rested on genes. You said, for example, that if an organism was to develop a new chamber of the heart, it would need yet another gene to guide the blood vessels to the right place, yet another gene to guide the nerves to the right place, and yet another gene to make sure the new heart chamber doesn't " leak. " Previous and simultaneous to this, you have consistently and persistently argued that " no new genetic material " is introduced into a genome. Not only are all of these entirely erroneous, but they all rest on genetics; you now argue that we cannot formulate our arguments on genetics. Which is it? > Seeing is > believing, and we are not seeing evolution on a grand scale. You're applying a double standard to evolution. You would not apply this burden of evidence to anything else except this one, single theory. You do not apply it to subatomic particles; you do not apply it to the chemical understanding of semi-conductors that your computer runs on; you would, I hope, not apply it to our justice system. There is simply no other theory that anyone would insist one must actually directly see with the naked eye to accept. Chris -- The Truth About Cholesterol Find Out What Your Doctor Isn't Telling You: http://www.cholesterol-and-health.com Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 7, 2006 Report Share Posted September 7, 2006 , the only one with a " knee jerking " reaction is apparently you. I cannot be held accountable for what someone else does, only what I do. Evolution and Creation simply do not mix,and because a college professor chooses to teach evolution does not make it right. We've been having a good time with our little debate, no name slinging has gone on. It is quite simple, you don't have to open the thread, when you see the topic why don't you simply delete it, and don't be so judgmental on people such as myself. And please, the name calling is so childish. Re: EVOLUTION: was Re: Salt On 9/6/06, <bible770@...> wrote: > > honestly, I've never met a Christian who believed in evolution. When someone comes > and says that the bibles says such and such, I always ask for chapter and verse. I'm > asking you where you get your information from on the Christians viewpoint on evolution, > as far as believing in it. > Sorry > As an example, I had two professors in college who taught aspects of evolution (one anthropologist and one geologist) and both were Christians. Neither saw any difficulty in reconciling the two. And these were people who had actually studied both the science and the religion, not just people having knee-jerk reactions. There doesn't have to be any conflict. What conflict exists is artificial and the result of ignorance or obduracy on one side or the other. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 7, 2006 Report Share Posted September 7, 2006 On 9/7/06, <bible770@...> wrote: > , > the only one with a " knee jerking " reaction is apparently you. I cannot be held > accountable for what someone else does, only what I do. Evolution and Creation > simply do not mix,and because a college professor chooses to teach evolution > does not make it right. We've been having a good time with our little debate, no > name slinging has gone on. It is quite simple, you don't have to open the thread, > when you see the topic why don't you simply delete it, and don't be so > judgmental on people such as myself. And please, the name calling is so > childish. > And it's what you are doing that I'm taking issue with. When you make comments like (paraphrasing) " if humans came from monkeys then why do monkeys still exist " and " I don't know any Christians who believe in evolution " you're making it crystal clear that you haven't studied evolution at all and don't have any interest in being open-minded about it. When you deny the possibility of something you clearly don't understand (or want to understand) that's pretty much a textbook definition of " knee-jerk reaction. " You're even condemning those professors I talked about without having any idea what they taught. I'm not asking for the thread to stop, I'm encouraging it to continue. But what does your blanket condemnation of evolution and refusal to be posessed of any knowledge about it contribute? That's my frustration. It's not name calling, it's a simple rehash of words put in a public forum. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 7, 2006 Report Share Posted September 7, 2006 its like this, you are a rude dude. It appears to me that you are as " closed minded " on the issues that I believe in as I am in evolution. Yes, it is sadly true, I do not believe in evolution. I believe that everything was created by God. And you statement on " condemning those professors " you had talked about, explain that one to me please. And unless you are the moderator of this board, then what right have you to tell me whether I can or cannot post on this thread? And by the way, what textbook did you get your definition out of? Re: EVOLUTION: was Re: Salt On 9/7/06, <bible770@...> wrote: > , > the only one with a " knee jerking " reaction is apparently you. I cannot be held > accountable for what someone else does, only what I do. Evolution and Creation > simply do not mix,and because a college professor chooses to teach evolution > does not make it right. We've been having a good time with our little debate, no > name slinging has gone on. It is quite simple, you don't have to open the thread, > when you see the topic why don't you simply delete it, and don't be so > judgmental on people such as myself. And please, the name calling is so > childish. > And it's what you are doing that I'm taking issue with. When you make comments like (paraphrasing) " if humans came from monkeys then why do monkeys still exist " and " I don't know any Christians who believe in evolution " you're making it crystal clear that you haven't studied evolution at all and don't have any interest in being open-minded about it. When you deny the possibility of something you clearly don't understand (or want to understand) that's pretty much a textbook definition of " knee-jerk reaction. " You're even condemning those professors I talked about without having any idea what they taught. I'm not asking for the thread to stop, I'm encouraging it to continue. But what does your blanket condemnation of evolution and refusal to be posessed of any knowledge about it contribute? That's my frustration. It's not name calling, it's a simple rehash of words put in a public forum. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 7, 2006 Report Share Posted September 7, 2006 I'm not telling you to do anything, I'm asking you to consider more carefully what you say. Do it or not, I don't really care. The part about condemning the professors referred to the phrase " that doesn't make it right " you used with respect to their teaching of evolution. Anyhow, I'm not a christian, if that's what you mean by closed-minded. But I've read a whole lot of the bible and a whole lot of other writing about it because I find it interesting. My point is simply this: if you're going to make blanket statements about something being wrong or out of line with your faith, shouldn't you actually know something about it? I'm making an effort to understand christianity (though I haven't said anything about it anyway), despite the fact that I don't " believe " in it (more complex than that but I'm about to get on a plane). What's the whole reference to a definition and a textbook? Did I miss something? etc. Off for the weekend, so no more rudeness until Sunday. Dude. On 9/7/06, <bible770@...> wrote: > > its like this, you are a rude dude. It appears to me that you are as " closed minded " on the issues that I believe in as I am in evolution. Yes, it is sadly true, I do not believe in evolution. I believe that everything was created by God. And you statement on " condemning those professors " you had talked about, explain that one to me please. And unless you are the moderator of this board, then what right have you to tell me whether I can or cannot post on this thread? And by the way, what textbook did you get your definition out of? > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 7, 2006 Report Share Posted September 7, 2006 -------------- Original message ---------------------- From: " " <bible770@...> >. Yes, it is sadly > true, I do not believe in evolution. I believe that everything was created by > God. I'm not sure why you would be participating in this discussion then, because obviously there is no reasoning with you. If there is a God, he laughs at people who worship him so simplistically. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 7, 2006 Report Share Posted September 7, 2006 lol...have a safe flight. Re: EVOLUTION: was Re: Salt I'm not telling you to do anything, I'm asking you to consider more carefully what you say. Do it or not, I don't really care. The part about condemning the professors referred to the phrase " that doesn't make it right " you used with respect to their teaching of evolution. Anyhow, I'm not a christian, if that's what you mean by closed-minded. But I've read a whole lot of the bible and a whole lot of other writing about it because I find it interesting. My point is simply this: if you're going to make blanket statements about something being wrong or out of line with your faith, shouldn't you actually know something about it? I'm making an effort to understand christianity (though I haven't said anything about it anyway), despite the fact that I don't " believe " in it (more complex than that but I'm about to get on a plane). What's the whole reference to a definition and a textbook? Did I miss something? etc. Off for the weekend, so no more rudeness until Sunday. Dude. On 9/7/06, <bible770@...> wrote: > > its like this, you are a rude dude. It appears to me that you are as " closed minded " on the issues that I believe in as I am in evolution. Yes, it is sadly true, I do not believe in evolution. I believe that everything was created by God. And you statement on " condemning those professors " you had talked about, explain that one to me please. And unless you are the moderator of this board, then what right have you to tell me whether I can or cannot post on this thread? And by the way, what textbook did you get your definition out of? > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 7, 2006 Report Share Posted September 7, 2006 , > its like this, you are a rude dude. It appears to me that you are as " closed minded " on >the issues that I believe in as I am in evolution. Yes, it is sadly true, I do not believe in >evolution. I believe that everything was created by God. The theory of evolution does not propose who did or did not create the evolutionary process any more than a theory of spontaneous generation would. If you choose to believe that your faith dictates a specific way in which God created life that is in conflict with evolution, by all means do so. But you cannot contrast the concepts of evolution and " everything was created by God " as if they are actually in conflict, because they are not. Chris -- The Truth About Cholesterol Find Out What Your Doctor Isn't Telling You: http://www.cholesterol-and-health.com Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 7, 2006 Report Share Posted September 7, 2006 no, He actually " covets " the worship of His people.... Re: EVOLUTION: was Re: Salt -------------- Original message ---------------------- From: " " <bible770@...> >. Yes, it is sadly > true, I do not believe in evolution. I believe that everything was created by > God. I'm not sure why you would be participating in this discussion then, because obviously there is no reasoning with you. If there is a God, he laughs at people who worship him so simplistically. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 7, 2006 Report Share Posted September 7, 2006 Evolutionists agree that the eye of octopuses and the mammalian eye do not have common origin, yet function and form of these organs are strikingly similar, including features such a as muscle position, retina, iris, rods and cones. There are many other analogous traits held by animals presumed to have common ancestry or presumed not to have common ancestry. Since we were not there to observe the presumed branches of common or divergent ancestry, it is highly speculative, especially in light of hereditary limits currently observed. Note for example, with massive amount of data and experimentation done on fruit fly mutations and heredity, fruit fly heredity shows definite limits of variation, in spite of numerous mutations and recombinations observed. As we see with the analogous traits of octopuses and mammals. It does not follow that analogy of traits proves common origin. This is not only true with separate species, but with the same individual organism. For example, the forelimbs and hind limbs of animals have no evidence that the forelimbs evolved from the hind limbs or visa versa. In the evolutionary model there is no explanation of how, as an animal evolves, the forelimbs know to keep or grow extra toes or features in analogy to the hind limbs. If a goat were to mutate an extra toe that could become theoretically beneficial, evolution does not explain that the fore toes will then reproduce from the hind toes. Again, analogy does not follow common origin either in generations of different kinds of animals nor in the same animal. In the same way, the model that bacteria evolved into mitochondria follows the same fallacy of the type that would assume that octopuses evolved into mammals or that two toed forelegs evolved into two toed hind legs. Bacteria have analogies to mitochondria and chloroplasts, but the model lacks observational validity. Firstly, this process is not observed in real time. Secondly, since we cannot go back and test the processes that supposedly would have produced mitochondria from bacteria, then we lacking observational data based the past. Thirdly, it does not follow that analogy proves common origin without observing common origin. Fourthly, we are lacking experimental data to produce mitochondria from bacteria in real time laboratory conditions. Anyone of these points alone can render the logic behind the syntrophic hypothesis invalid. The validity of any one or more of my above points multiplies the invalidity. That experimental data and observational data are lacking is illustrated from http://en.wikipedia.org/wiki/Eukaryote : " The origin of the endomembrane system and mitochondria are also disputed. The phagotrophic hypothesis states the membranes originated with the development of endocytosis and later specialized; mitochondria were acquired by ingestion, like plastids. The syntrophic hypothesis states that the proto-eukaryote relied on the proto-mitochondrion for food, and so ultimately grew to surround it; the membranes originate later, in part thanks to mitochondrial genes (the hydrogen hypothesis is one particular version). " --------------------------------------------------------------------------------\ ---- As far as the issue of new genetic material. There is a step in my logic that has to be clarified. I did not state that macoevolution (per the my discussed definition) is proved if we observe new material added to the genome. I stated that macroevolution is not possible, since no new material is added. You have met my challenge to demonstrate new material being added. But the converse is not true. I never stated that new material being added to the genome would prove macroevoltion. Many more requirements would be needed as I explained in a previous post. Not only would we have to demonstrate that new material is being added to the gemone, but we would also have to demonstrate that the new material can generate complex traits and organs and organ systems. It is one thing to observe that genetic material is being added, and it is wholly another to discover why and how, for example, a new chamber for a heart can be structurally added, not just proteins and lipids, but a complex arrangement of structures, oriented just right in complex ways so as not to kill the organism before it evolved to a next level. Evolution does not even remotely explain the origin of complex and new organs or organ parts. Mathematically, random mutations would kill an organism before complex new fully functioning systems would come " online. " Masses of tissue mutating in slow progression over generations, would not only have to project what they are trying to form, but also have to be non-obstructive to the survival of the species for macroevotion to happen on a grand scale. All you are describing are minute variations and minute changes, which begs the question, " How do these minute mechanisms produce wholly new organisms? " Natural selection is insufficient to explain how new organ systems arise, only how genes are selected out of the gene pool to create less variety and viability under varied environments. Natural selection, for example, is able to reduce the gene pool not increase variety, and that extremely rapidly as we observe currently. Observational heredity also works against origins of species with new and unique organ systems while instead demonstrating that as varieties isolate from the gene pool, they loose traits as preserved from the whole and become less likely to survive. Hybridization also demonstrates a general lessening of viability for survival as with tendencies for sterility. > [...] > > > Cute and creative. The evolutionary model keeps evolving. > > Of course it does. This is what science does. New observations lead > to new hypotheses, which in turn lead to knew experiments and > collections of data that lead to the development of new theories or > expansion or rendition of old ones. Like every other science. > > > A little > > observation mixed with massive amounts of conjecture about supposed > > millions of years worth of assumptions. There continue to be > > conflicting speculive renditions. > > > > A flattering review says, > > > > " The result of thirty years of delving into a vast, mostly arcane > > literature, this is the first attempt to go beyond – and reveal the > > severe limitations of – the dogmatic thinking that has dominated > > evolutionary biology for almost three generations. Lynn Margulis, whom > > E.O. called 'one of the most successful synthetic thinkers in > > modern biology,' presents a comprehensive and scientifically supported > > theory that directly challenges the assumptions we hold about the > > diversity of the living world. " > > I think you should give authors and dates for these quotes. This > review must be from the early or mid-1980s. > > This is what Freeman, _Biological Science_ (2005) has to say: > > " In 1981 Lynn Margulis expanded on a radical hypothesis -- first > proposed in the nineteenth century -- to explain the origin of the > mitochondria. " Then, after presenting a short summary of the large > amount of circumstantial evidence that supported its plausibility, it > goes on: " Although these data are impressive, they are only consistent > with the theory. Stated another way, they do not exclude other > explanations. Years after Margulis began to champion this theory, > however, data emerged that persuaded virtually all biologists that the > endosymbiosis theory was correct. " > > Additionally, _Molecular Biology of the Cell_ (2004), the lead author > of which is Bruce Alberts, the head of the National Academy of the > Sciences, has a large section on the genetics of the mitochondria and > chloroplasts, which uses the endosymbiosis theory because it is > overwhelmingly supported by the genetics of these organelles and has > overwhelming power to explain the genetics of these organelles. > > So, you're review in which the author states that the theory directly > challenges mainstream assumptions is certainly out of date. If your > purpose is to show that it directly challenged assumptions at one time > and eventually came to dominate, then I acknowledge that, as that is > exactly what happens in all science. > > > I admit it is a cool idea and creative synthesis. > > > Notice how it " directly challenges directly challenges the assumptions > > we hold about the diversity of the living world. " > > Held. 25 years ago. > > > This is an example how evolutionists have greatly diverge and disagree > > as to the causes and effects regarding presumed eons of unseen living > > development, yet for all the disagreement as to what is or were the > > mechanisms of presumed evolution, it happened. > > Only virtually everyone accepts the 19th century endosymbiotic theory > of mitochondria and chloroplasts as expanded on by Margulis in 1981. > > > The mechanisms are in > > debate. What theoretical organisms transformed into which is in > > debate. Whether evolution of totally new kinds was gradual or sudden > > is in debate. Disagreement abound, and radical new explanations that > > supplant the previous explanations rise up in triumph. Yet let an > > evolutionary scientist conclude through years of his own evolutionary > > research that evolution is not possible, and see how quickly he is > > dethroned! > > Can you give an example of an evolutionist who comes to this > conclusion and has published a coherent explanation? > > Chris > -- > The Truth About Cholesterol > Find Out What Your Doctor Isn't Telling You: > http://www.cholesterol-and-health.com > > > > <HTML><!DOCTYPE html PUBLIC " -//W3C//DTD XHTML 1.0 Transitional//EN " " http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd " ><BODY><FONT FACE= " monospace " SIZE= " 3 " > > <B>IMPORTANT ADDRESSES</B> > <UL> > <LI><B><A HREF= " / " >NATIVE NUTRITION</A></B> online</LI> > <LI><B><A HREF= " http://onibasu.com/ " >SEARCH</A></B> the entire message archive with Onibasu</LI> > </UL></FONT> > <PRE><FONT FACE= " monospace " SIZE= " 3 " ><B><A HREF= " mailto: -owner " >LIST OWNER:</A></B> Idol > <B>MODERATOR:</B> Wanita Sears > </FONT></PRE> > </BODY> > </HTML> > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 7, 2006 Report Share Posted September 7, 2006 ???? Connie, what are you talking about? EVOLUTION: was Re: Salt Oh then She just HAS to be doing both when She reads this. Connie > > no, He actually " covets " the worship of His people.... Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 7, 2006 Report Share Posted September 7, 2006 , > I've been thinking some more on this and some of your other posts, > and have some new questions (lucky you . In your opinion, would it > be correct to say that the natural laws themselves appear inherently > non-random and purposeful? The natural laws are self-evidently decidedly non-random. There could nine or twelve dimensions, but there are three. There could be three, five, or six fundamental charges, but there are positive and negative. There is simply nothing random about it. Granted, this is a simplification because the three-dimensional experience and the charges may themselves be a result of more complicated physical phenomena (such as the collapsing of other dimensions) but the same logic applies to the fundamental causative phenomena, whatever they are. Randomness and natural law are fundamentally opposed to each other. When we speak of " randomness " occuring we are taking a short-cut to mean that something is random with respect to the potential additional interference with what would naturally happen, but what is implicitly assumed is that what occurs is obedient to the decidedly non-random natural laws. Whether this is " purposeful " or not is more of a matter of guess or faith. > Related to that, I also wanted to run by you another area under the > ID umbrella and see how you'd characterize it. I saw a documentary > called The Privileged Planet (based on the book Rare Earth) and it > basically challenges the conclusions of Carl Sagan in his book Pale > Blue Dot that there are likely tons of Earth-like planets out there > (I honestly don't know much about Sagan except he was an atheist who > gets a lot of face time on the Discovery Channel). Anyhow, in this > documentary they assert that the universe is largely very hostile to > life, especially terrestrial life, and delve into the numerous > variables that all had to converge for Earth to sustain complex life- > being within the narrow hospitable zones of the galaxy and solar > system, planet of the right size and composition, right size moon, > type of sun, type of atmosphere, etc, etc. Then they take it one > step further and make the observation that the very conditions that > make a planet habitable coincidentally (or not) also make it ideal > for observing the universe and making scientific discoveries, which > some believe implies purpose. I haven't read Sagan but I have no idea how he could possibly conclude that there is any other planets that are anything like earth. Likewise, I have no idea how anyone would contest this. Maybe there is some evidence by which we could infer what planets are like in other solar systems but I don't know what it is. I don't think it necessarily implies purpose, unless the random chance of those things occuring is such that we would not expect it to happen given the estimated number of planets in the universe. I don't know whether or not that is true. > They never assert that Earth is or was > the only habitable planet, only that Sagan's conclusions that we are > one of a million earths which implies random insignificance and > puposelessness were unsupported by what we know about the universe. I don't see how a million earths would imply that each earth has no purpose anymore than 6 billion people imply that each person has no purpose. > Not to open a new can of worms, but what the hey, I was getting > bored of evolution anyway You'll have to hit up Deanna; she knows way more about planets and stuff than me. Chris -- The Truth About Cholesterol Find Out What Your Doctor Isn't Telling You: http://www.cholesterol-and-health.com Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 8, 2006 Report Share Posted September 8, 2006 Hi , I will not neglect to answer your questions and statements about endosymbiosis and finger/toe development, but I will probably delay it until tonight or tomorrow, and continue to discuss the heart for now. > New set of wings, suggest duplication of an organ already existing. > With a new heart chamber, a great challenge would be not just to > duplicate an entire thing again or part of a thing but to generate > parts that form a unique function and have unique orientation and > structure. You are right: they are not completely analogous. They do, however, have similarities. The phenomenon illustrates a clear example of how mutation-induced variation is not " random " in the sense of putting any random molecule in any random new place, but instead works with the rearrangement of functional units. You are correct that the development of additional chambers of the heart is more complex than the development of a second pair of wings, but since we do directly observe the latter, it is helpful to see how such a complete structure can be introduced at once without interfering with the function of the existing wings and even without disrupting the thorax, the proper segment of which is duplicated along with the set of wings all in one shot. > Changing from a two to a three chambered heart, for > example is not just like duplicating an appendage as a facsimile, > especially since the heart is asymmetrical, the new chamber cannot be > identical to any other chamber. How would a new chamber know where > to > grow? How would the organism know when to grow a new chamber? In looking at the comparative anatomy of hearts across organisms, nothing strikes me as a major obstacle to transitioning between these forms. I don't think they would happen suddenly like the new set of wings would in fruit flies actually, and I don't think that the organism would " known " to build the new heart. Although, given some of the developments in our understanding of mutations that have still not assimilated into the mainstream understanding of evolution because they are so poorly understood, there may indeed be a feedback mechanism " directing " mutation. We will probably find out much more about this over the next decade, though we would not find out if biologists became convinced that evolution is impossible. In any case, the earliest circulatory systems are called open circulatory systems, found in most non-vertebrates, where the " heart " just pumps the fluid (called " hemolymph " because it is a cross between blood and lymph) all over the place into the body cavity and organs directly absorb it. Annelids such as earthworms have closed circulatory systems with distinct blood vessels, but have the same type of simple one-chambered " heart " pumping through these vessels. Fish have a two-chambered heart. I sincerely doubt they developed this heart by " making a new chamber. " Rather, a simple invagination of the heart casing could begin the separation of atria and ventricles. The eventual continuation of this tissue into the heart would form a septum and a valve that would separate the atrium from the ventricle. Since the fish has a one-track circulatory system, nothing much changes about the nature of circulation from the system of a one-chamber heart. In the one-chamber primitive " heart, " there is an incoming vessel and an outgoing vessel. This doesn't change in the least in the development of the fish's two-track heart. Rather, the septum is formed in the middle of the heart, separating the atrium from the ventricle, and the portion of the heart that contains the previously established incoming blood vessel becomes by definition the atrium and the portion that contains the previously established outgoing blood vessel becomes by definition the ventricle. What would encourage this purpose? I'm not positive, but I suppose that any invagination or partial septum would back the atrium up enough to concentrate the blood and increase the delivery of a pump. In fact, I think the nature of the heart's innervation would play a factor in the benefit of this development. My understanding is that even in worms, the innervation causes a peristaltic wave across the heart. If this is the case, then the incoming portion of the heart would already be " beating " before the outgoing portion of the heart was " beating, " which would form the basis for the initial atrial contraction and the subsequent ventricular contraction. I'm not sure if the peristaltic action is responsive to pressure buildup within the worm's heart or not, but if it is, this further elucidates how chamber formation would develop. If it is not, such response could have developed in the primitive fish prior to chamber formation or in a fish predecessor. The benefit WITHOUT chambers is obvious -- you get the best pumping if you pump when the heart is full. This would especially cause any invagination or septum formation, however partial, to be beneficial in the fish. Any even partial formation of a septum separating the atrium and the ventricle will delay the ventricular contraction by causing the atrium to fill first. This would allow the ventricle to receive the necessary pressure increase very quickly rather than waiting to refill and can put more effort into a greater contraction while the atrium simultaneously collects blood for the next ventricular contraction, allowing the heart to do both collect and pump blood at once. I see no reason why this wouldn't provide modest benefits if it occurred gradually, and there is absolutely no reason whatsoever that an intermediate would be lethal in any way at all. The first septum would not necessarily have a " valve " but could just have an open space. The " valves " are essentially flaps of tissue with little cusps on the ventricular side that fill up with blood, pushing them back when the ventricle is full. These are of benefit, but they simply make the differentiation of the ventricle and atrium more beneficial. Their absence does not make the septum useless and certainly does not make the septum harmful. The frog heart appears to simply have arrived at two atria by a similar invagination/septum formation between the fish atrium. It would therefore not seem to be a " new atrium " " added " to the heart. If there is any obstacle of complexity in this, it isn't the " addition " of the " new chamber, " but would be the formation of a two-circuit circulatory system instead of a one-circuit circulatory system. Nevertheless, there is nothing " irreducible " about this complexity, especially considering the ability of blood vessels to find their way to targets without any kind of genetic coordinate system. Really the only difference between the fish and amphibian one- and two-circuit systems is that the lungs are diverted back to the left atrium in the amphibian rather than continuing to the body. This can be accomplished essentially by a single blood vessel. I wonder how this changes from a tadpole to a mature frog. My understanding is that primitive " lungs " of amphibians are believed to be derived from the swim bladder and not the gills. The " five-chambered heart " of lizards and turtles supports the idea gradual formation of septums, because this " five-chambered heart " is in fact a three-chambered heart in which there are two atria and one ventricle, but wherein the ventricle has a substantial development of two partial septums. In this model, the septums are substantially effective at isolating the oxygenated blood on one side of the ventricle, but it still mixes. In fact, the amphibian system is very similar in this respect, in that it is a large number of partial septums. It has a larger number of these partial septums but it is considered three-chambered rather than five-chambered because these septums are smaller. They nevertheless contribute to keeping the oxygenated blood on one side and the deoxygenated blood on the other, simply by causing the flow of blood within the interior of the ventricle to get blocked up at numerous areas. So both the amphibian heart and the reptile heart seem to be clear illustrations of intermediates between the single ventricle of the fish and the entirely separate ventricle of birds and mammals. Fully functional intermediates. No " new " structures, just the gradual growth of a separating structure within the original structure. And in some cases random. The amphibian heart has lots of partial septums, and they contribute to stopping the backflow. Logically, a central, larger growth of a septum would be even more effective at this. Animals that produced fewer larger septums might be selected for over those that produced more numerous and shorter septums, even though the latter are functional, simply because the former are more efficient. Thus, we see that frogs and other amphibians have many small partial septums, turtles and lizards have fewer and larger septums, while crocodiles, birds and mammals have one complete septum -- climbing right up the phylogenetic tree with evolution. In fact the step-by-step development of the complexity of the heart follows the proposed evolutionary lineage quite perfectly. > Why > are we not seeing two chambered organisms attempting to evolve a third > chamber like other kinds of organisms have? First, I don't know whether we are seeing this or not. If we ARE seeing it, what we would find is some fish whose atrium is partially divided by a partial septum, and that some fish lack this partial septum, and in other fish that have it, it completes the partition to various degrees. I simply do not have the knowledge of comparative fish anatomy to know whether this is found or is not. Do you? Second, think about how many times evolutionary theory posits that a three-chambered heart developed from a two-chambered heart. If this is posited to have happened once, why would we expect to observe it numerous times over a very short time period? Second, the need for two atria is a result of the need for a two-circuit circulatory system, which is in turn a result of the need to breathe primarily through the air rather than through water. There is a greater drop in blood pressure when air is respirated across the lungs, which makes the pressure insufficient to make it through the peripheral body circulation; on the other hand, a heart that pumps stronger will damage the sensitive alveoli of the lungs. Now I don't know that much about the various types of respiratory systems in fish and amphibians, but the gradual development of air respiration is obvious. Many fish engage in surface respiration, in which they inflate their swim bladder to bring them to the surface of the water, taking in oxygen-rich water in the tissues surrounding their mouth and possibly even breathing some air in through the mouth. The amphibian has gills in juvenile form and has primitive lungs that are more like sacs that probably developed from the swim bladder, and do not have the sensitive alveoli of mammalian cells but still do have a greater pressure drop. There was recently found a partial fossil of what appears to be a fish that had limbs, and probably used both forms of respiration, perhaps occasionally crawling to the shore to look for food. Interestingly, the molly, which is a fish that engages in air surface respiration, physically pushes itself against rocks to bring its mouth up to the oxygen-rich surface water and hold itself upright. It is interesting to speculate that limbs could have facilitated this process in oxygen-deprived waters. And oxygen-deprived waters may provide stress that either leads to a greater random mutation rate or turns on the deliberate mutation systems that we barely understanding. Even stubs could conceivably assist a fish in using rocks to hold itself upright and absorb oxygen from the surface. It is further interesting to note that these fish have an advanced capacity to hold air that they breathe in through their mouths, in some (maybe all?) cases into the swim bladder, as this assists in attaining the buoyancy necessary to reach the surface. Just today, I was watching one of the few aquatic salamanders swimming around in a fish tank. They have flat swimming tails and seem almost like eels. They are highly efficient swimmers, but have little stubs of hands and feet. Since they feed on earthworms, I'm guessing that they use these to dig near the shore to obtain their earthworms. Any aquatic animal that comes to the shore for periods to look for food will benefit from having an increased ability to use air as a respiratory medium. And in this case, if the blood vessles passed through the swim bladder/primitive lung through the rest of the body circulation without returning to the heart, it would still be useful by providing more oxygen to the blood even though it had not be fully deoxygenated. Blood vessels leading back to the atrium would make it much more effective so that completely deoxygenated blood could lead to the primitive lung, but increasing the use of a swim bladder for oxygen provision would neither be useless in the absence of such a system nor lethal. In fact, *partial septums* (septa?) would probably work very much like the *partial septums* of a frog ventricle once such a second circuit developed. In the frog ventricle, both the oxygenated blood and the deoxygenated blood cooexist. They mingle a bit in the middle, but because of the many small partial septums, they are largely, not completely, separate. I see absolutely no reason why the two-circuit circulatory system couldn't codevelop with incomplete septums (septa? argh!) in a transition amphibian predecessor in exactly the same way. In any case, to reiterate the essence of my answer: 1) I don't know enough to say that we aren't observing the partial growth of a septum within the atrium of some fish. 2) We would not expect this to happen over and over again, so if we are not observing it happening, it is very unsurprising, because there is no particular pressure on fish to complete any partial division of the atrium that might be exist without the need for a two-circuit circulatory system. 3) One could argue that we do in fact see a transitional ventricular separation in the both the frog and the turtle/lizard heart. In both cases, we can see how this intermediate is in fact functional but not ideal and further growth of those separations would lead to more efficient functioning as seen in bird and mammal hearts. > For that matter, what > prevents us from seeing the rapid growth of new features such as new > heart chambers, if such evolution has occurred in the past? If there > are such mechanisms that can produce almost immediate generation of > additional limbs, then what prevents entirely new organs from being > produced at the same rapid rate? I don't see any reason to believe that limbs originated all at once. I suspect, like I wrote above, that they would have developed as stubs, possibly, perhaps, to make air-surface respiration more efficient in oxygen-deprived waters. (I just thought of this a few minutes ago; I'm not sure if it is an original proposition or not -- I'm guessing not.) Limbs could be duplicated easily, but in most cases this would probably not be very efficient. This wouldn't necesarily happen as easily in every species, because the different homeotic genes may be more or less likely to be modified or duplicated depending on their placement on chromosomes and any other determinants of vulnerability. Also, we would be vastly more likely to see these things happen in organisms that reproduce quickly. And we do in fact see duplication of wings and even legs growing out of the head of fruit flies! What on earth would be the benefit of legs growing out of the eyes, I don't know. I imagine that fruit flies with legs where the antennaes are would probably be of definitely decreased fitness! But both limbs and heart chambers probably developed very gradually, since it is incredibly easy to conceive of how the intermediates could be functional and we do in fact see what appear to be intermediate divisions between ventricles in some species. By the way, what is your explanation for the presence of a useless and completely disconnected pelvis or pelvic bones in whales? > We should be observing entirely new > organs or organ parts, not just duplicates of what is already there. I'm not sure what the benefit of having more than four chambers to a heart would be. But, if there were a reason to have a five-chambered heart, turtles and lizards have already accomplished a partial intermediate to such a heart that is actually a three-chambered heart but which has septa that are so developed that it is actually referred to as a " five-chambered heart, " often with quotes around " five-chambered. " So, I suppose my question for you would be, what gives you the impression that we AREN'T observing intermediates to ventricular partitioning? > Heck, duplication happens all the time with sexual reproduction, but > duplication of entirely USEFUL new organs and organ parts happens so > slowly that we are not observing it. In that case, it probably does > not happen at all. There are only so many organs that are useful to have. Duplication of homeotic genes does NOT happen often. It's very rare! Sure, they've found fruit flies with two sets of wings and with legs on its head, but it's not like you see any of these animals around if you aren't carefully examining every damn generation of them in a laboratory. Duplication of the gene for the dorsal nerve cord could have produced the basis for a vertebral column, but how many vertebral columns can you have? These types of duplications are extremely rare, and of those that occur, very few could be useful. The fact that they DO occur and that there ARE numerous different steps in evolution that can be explained by duplications in homeotic genes suggests to most scientists that a few rare evolutionary developments have occurred through the duplication of homeotic genes. But what we DO see happen is the duplication of non-homeotic genes. And in fact we can see how it happens in certain types of environmental extremes (incidentally, the environmental extremes ALSO exert selective pressure, so the two processes of mutation and selective pressure may not be as dissociated as they are conventionally thought to be), probably to increase the expression of a certain gene. But if you have duplications, you also have a certain degree of redundancy. When you have redundancy, you have the opportunity to mutate a gene without losing the function of the original gene, and that way you can get changes that may be functionless or of only partial usefulness without the potentially adverse or even lethal maladaption of losing the original established function. And we see LOTS of proteins that seem to be a few functional units just rearranged in different ways. The fact that we observe: 1) duplication of genes to provide redundant genes that can be modified without losing original functions 2) site-specific recombination wherein functional units of a gene but not whole genes can be exchanged between different genes to assemble new genes made of rearranged but established functional units 3) many important proteins that appear to be manufactured in exactly this way indicates to most scientists who study genes and proteins that duplication and site-specific recombination are important processes in the evolution of genes and proteins. > I will venture to state that limits to variation > exist in the organism, as is demonstrated by observational heredity. The kind of heredity we observe is not written in stone. When we delete the lactase gene from E. coli, we observe that it mutates a different gene to form a functional lactase gene and *additionally* mutates a second gene to turn it into a lactose-responsive lactase promoter to regulate the expression of the first gene and then we further observe that members of a bacterial colony exchange these genes with each other in a cooperative fashion. Interestingly, cooperation and not survival of the fittest! So ignorant people who grasp onto misinterpretations of observed evolution to justify Social Darwinism have nothing to do with the objective evaluation of science that shows evidence for evolution everywhere. We observe useful things like this, and we observe useless things like legs sticking out of fruit fly heads. Exactly which " observed limits " are you proposing? > These same kinds of limiting factors are important to the survival of > kinds and species, and are one of the many reasons why macroevolution > is not observed and does not happen. Yes, under normal circumstances we DO do everything in our cellular power to maintain the stability of our genome against *random* changes. What mechanisms we have for deliberate site-specific recombination we know very little about. These may turn out to be very significant. But just look at E. coli -- it has two sets of DNA replication enzymes. It *usually* uses the highly accurate replication enzymes. When subjected to stress, it whips out a second set of enzymes that are error-prone. Actually, it is a set of enzymes that are each error-prone in different ways. And it deliberately mutates its genome. When the stress is relieved, it returns to maintaining its genome. Darwinian gradualism has been steadily and slowly abandoned since the 1970s. We would NOT expect to see every possible type of evolution occuring at every point in time. And the fact is that we have no idea what kind of speciation or macroevolution takes place right now. The highest degree of biodiversity as well as intraspecific variability is in the tropics. Who knows what kind of insects are morphing into what kind of who knows what in the thick of the tropical rainforest. Chris -- The Truth About Cholesterol Find Out What Your Doctor Isn't Telling You: http://www.cholesterol-and-health.com Quote Link to comment Share on other sites More sharing options...
Guest guest Posted September 8, 2006 Report Share Posted September 8, 2006 Hi , > its like this, you are a rude dude. It appears to me that you are > as " closed minded " on the issues that I believe in as I am in evolution. > Yes, it is sadly true, I do not believe in evolution. I believe that >everything > was created by God. I'm curious -- does this mean you don't believe in erosion because God created mountains? Chris -- The Truth About Cholesterol Find Out What Your Doctor Isn't Telling You: http://www.cholesterol-and-health.com Quote Link to comment Share on other sites More sharing options...
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