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Author Topic:   The origin of new alleles
Quetzal
Member (Idle past 5902 days)
Posts: 3228
Joined: 01-09-2002


Message 10 of 92 (379197)
01-23-2007 11:04 AM
Reply to: Message 9 by RAZD
01-23-2007 9:38 AM


The other argument I have seen with this is that extra copies of DNA segments are "stored" DNA for future use to be brought out when needed, even if they have to be combined with segments from other "stored" DNA to make the necessary new genes.
Indeed. This argument generally revolves around the non-coding regions, tandem repeats, etc. It often takes one of three forms: a) the non-coding regions are "storage" for DNA material that will be incorporated into exons when "needed" (this is the teleological IDist formulation); b) it represents the remainder of the universal genomes present in the various "kinds" before the Flud, and hence are the bits that weren't used up in the hypermicroadaptations experienced within "kinds" subsequent to that event (and also represents the bits that are available for shuffling about when any new adaptation or species is identified, thus bolstering the "no new information" argument); or c) it represents an "echo" of the perfect all-encompassing genome present in the original organisms of the GoE before the Fall, and thus is evidence of the long-term degradation of all life after the apple incident.

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 Message 9 by RAZD, posted 01-23-2007 9:38 AM RAZD has replied

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Quetzal
Member (Idle past 5902 days)
Posts: 3228
Joined: 01-09-2002


Message 22 of 92 (380036)
01-26-2007 7:56 AM
Reply to: Message 21 by Wounded King
01-26-2007 5:03 AM


Re: The origin of new alleles
As far as an allele being parasitic goes, that would only apply to deleterious mutations since if the mutation was not deleterious then the relationship would be mutualistic or possibly commensal rather than parasitic.
Hi WK,
Is this a new way of describing things? I've never heard the terms of ecological interactions being used to describe what occurs at the gene level - but then again I'm not a geneticist, so I may be out of it. I can maybe see viral insertions/retrotransposons as somehow "parasitic", but I don't get how other types of mutations could be considered "mutualistic" etc. Is this just a different way of looking at mutation, using borrowed terms (terms which, btw, even ecologists are now trying to move away from since the interactions they supposedly describe are way more complicated than the terms suggest)?

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 Message 21 by Wounded King, posted 01-26-2007 5:03 AM Wounded King has replied

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