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Author | Topic: more problems for the "directed mutation" zealots | |||||||||||||||||||
derwood Member (Idle past 1875 days) Posts: 1457 Joined: |
(did not want this to get buried in the thread I already mentioned this in)
Many antievolution zealots (e.g., Spetner, Fred Williams, etc.) have 'proselytized' the concept of directed or 'non-random' mutations as evidence that post-flood hyperspeciation is possible and explicable by the "fact" that the genomes of the original 'kinds' on the ark had all of the 'genetic information' required to produce them all.Ignoring for now the obvious absurdity and desperation in such a position, more and more evidence accumulates demonstrating that 'directed mutations' aren't. The latest nail in the NREH/'directed mutation'/'Biotic message' argument: ***********************************************Amplification-mutagenesis: evidence that "directed" adaptive mutation and general hypermutability result from growth with a selected gene amplification. Proc Natl Acad Sci U S A 2002 Feb 19;99(4):2164-9 Hendrickson H, Slechta ES, Bergthorsson U, Andersson DI, Roth JR. Department of Biology, University of Utah, Salt Lake City, UT 84112, USA. When a particular lac mutant of Escherichia coli starves in the presence of lactose, nongrowing cells appear to direct mutations preferentially to sites that allow growth (adaptive mutation). This observation suggested that growth limitation stimulates mutability. Evidence is provided here that this behavior is actually caused by a standard Darwinian process in which natural selection acts in three sequential steps. First, growth limitation favors growth of a subpopulation with an amplification of the mutant lac gene; next, it favors cells with a lac(+) revertant allele within the amplified array. Finally, it favors loss of mutant copies until a stable haploid lac(+) revertant arises and overgrows the colony. By increasing the lac copy number, selection enhances the likelihood of reversion within each developing clone. This sequence of events appears to direct mutations to useful sites. General mutagenesis is a side-effect of growth with an amplification (SOS induction). The F' plasmid, which carries lac, contributes by stimulating gene duplication and amplification. ,b>Selective stress has no direct effect on mutation rate or target specificity, but acts to favor a succession of cell types with progressively improved growth on lactose. The sequence of events--amplification, mutation, segregation--may help to explain both the origins of some cancers and the evolution of new genes under selection. ******************************************** The abstract speaks for itself... [This message has been edited by SLPx, 11-13-2002]
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derwood Member (Idle past 1875 days) Posts: 1457 Joined: |
quote: Indeed - I hav an even more extensive list. But you can't teach an old dog new tricks - hence, the creationist will continue 'prosyletizing' this falsehood for years to come...
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derwood Member (Idle past 1875 days) Posts: 1457 Joined: |
[QUOTE]Originally posted by Fred Williams:
[B] quote: The internet king of misrepresention continues unabated, this time he misrpresesents both Spetner and myself, all in one sentence! Please Scott, post ANYTHING I’ve said within the last 6 months or so where I state that 'non-random' mutations are evidence that post-flood hyperspeciation is possible. [/quote] Last 6 months - THATS you excuse now? You mean you are no longer PROSELYTIZING this? But gee, Williams, you were so damn sure of yourself when you were PROSELYTIZING this before - remember? The "large cache" of evidence that "directed mutations" occurred and could help explain (away) the obvious mythology of post-flood hyperspeciation? That this 'refuted' Darwinism and all that? Can this really be a GIGANTIC capitulation on the part of a creationism science expert like you? I wonder what other things that you have been so damn confident about in the past you will now backpedal on....
quote: Oh, YOU realize that now? This will be fun! I have archives of posts in whihc you say things like neutral mutations actually take longer to fix in a population! This is going to be so much fun! Your overbearing overconfidence will once again demonstrate your incompetence.quote: Bullshit. You never posted a thing to me or any board I've seen "6 months ago" about how you totally flip-flopped on the "directed mutations" schtick that you were a "proselytizer" of. You have alluded to this recently, but I suspect that it is because you are jsut trying to save face - the "I knew it all along" bit that you like to pull out now and then. The truth is, Williams, that you are just too damn egomaniacal to admit that you might have been wrong in the first place.quote: Williams, you misrepresent me. Truth is hard for you to tell, even when the very words are plain to see. I said Spetner is an "antievolutionist", not a YEC. From the good folks at AiG: "Spetner mentions the Torah (of which Genesis is a part) and a rabbinical tradition of some 730 separate kinds of animals and birds originally created." In addition, there was a page - now unavailable - regarding the Torah and how Spetner was able to reconcile Rabbi David Lauria's interpretation using his "directed mutation" schtick. Sorry, misrepresenter Moderator 3, the only misrepresentation is coming form you. As always.quote: No, and only the dishonest zealot would try to claim that I did. However, again only the dishonest zealot would continue to use "directed mutations" as an evolution refuter considering the fact that the overwhelming weight of evidence is against them. So, I guess you are ignoring my example? Typical. [This message has been edited by SLPx, 11-14-2002]
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derwood Member (Idle past 1875 days) Posts: 1457 Joined: |
quote: For mturner?
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derwood Member (Idle past 1875 days) Posts: 1457 Joined: |
quote: Sure. Considering the fact that Williams claimed I "misrepresented" Spetner's position by writing that he doesn't believe Spetner is a YEC when I actually wrote that he is an "antievolutionist" is a pretty clear misrepresentation. As you should know by now, one of Fred's 'debate' tactics is to accuse whoever he is 'debating' of misrepresenting' this or that. I suggest that such accusations from Fred be taken with a grain of salt.
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derwood Member (Idle past 1875 days) Posts: 1457 Joined: |
quote: Thats you, Mr.Electrical engineer creationist "information theory expert.". You don't like having your obvious shortcomings displayed, and I like to do it. You call it misrepresentation. I call it cutting throgh the face-saving double-speak.quote: No, you and ReMine. I think you do it because your hero ReMine likes ot accuse everyone of it.Oh, and this one guy on the 'creationtalk' board. I said that he uses 'awe' as evidence fopr creation. He said I was misrepresenting him becaus he never used the word 'awe'. I think maybe he has read ReMine too... quote: You have used that same statement before. Didn't really match reality then, either. You are like the character that Nicole Sullivan played on Mad TV - the annoying, rude lady with the 'bitchy' voice who insulted people left and right, and when they conformted her she put her fingers in her ears and chanted "lalalalalala".quote: Must be one of those shortcomings of the media. Yeah, the english language is a tricky one....quote: He did not really offer a theory at all. A theory actually has to have some supporting evidence. All Spetner had - and all he still has - is wild extrapolations, argument via definition, and, like you, way too much confidence.And all you are offering is one of those arguments via "I/he did not say exactly that". Like when ReMine claims that he never said there was a conspiracy by evolutionists to keep 'Haldane's dilemma' covered up (which is utterly stupid on the face of it), that he only said that it was "hushed up and brushed aside" for 40 years... the implications are clear enough. Of course, your old buggery boy 'John Paul' certainly advocated Spetner's fantasy to account for the post-flood fantasy.Maybe you'd better straighten him out. quote: Of course you have - isn't it required?quote: Thus, oh master of the acusation, I must have misrepresented him because YOU, FRED "Info Expert" WILLIAMS, see it that way. It must be true then.quote: Well, that is good, because I never said he was a YEC. You made that up to trump up a charge of 'misrepresentation', then when you saw that was a lie on your part, you trump up something else. Good false witness, there god boy.quote: Maybe you should take off those bliders and see the implications of claims rather than using this absolutinst mindset of yours.quote: In the end, nobody really cares what some personal web page creationist thinks, anyway.quote: Gee - good thing that they don't really occur!quote: Wow - an information theory expert, a master population geneticist, a bibilcal scholar, AND an espert in the philosophy of science! Wow!
quote: Got that article done yet? No? Then why are you discussing them? [This message has been edited by SLPx, 11-15-2002]
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