Re: Provirus in Chip / Gorilla DNA but not Human
- From: Robert Carnegie <rja.carnegie@xxxxxxxxxx>
- Date: Mon, 23 Jun 2008 04:37:07 -0700 (PDT)
On Jun 22, 6:32 am, John Harshman <jharshman.diespam...@xxxxxxxxxxx>
wrote:
Desertphile wrote:
Gods, I have another question but I cannot understand the answers
I have seen in WikiPedi.
How is it possible for a provirus to be inserted in the DNA of
chimpanzees and gorillas at the same insertion point but not show
up in the human genome?
It's been said that there are some hotspots of retroposon insertion.
Don't know about proviruses. But there are two simple potential
explanations that don't involve hotspots:
1. The provirus insertion was polymorphic (i.e. there was both a
presence and an absence allele) in the common ancestor of
chimps/humans/gorillas, eventually became fixed in chimps and gorillas,
but was lost in humans (i.e. the absence allele became fixed).
2. The provirus insertion was fixed in the common ancestor of
chimps/humans/gorillas, but was deleted in humans.
Would you then /predict/ (i) that proviruses /do/ exist that are
identical in species A and B but modified or absent in C, when C has a
more recent common ancestor with B than B with A, /and/ (ii) that
creation scientists will claim this as disproof of evolution?
.
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