|FROM ||Ruben Safir
|SUBJECT ||Subject: [Hangout - NYLXS] (fwd) Re: Human & ape evolution
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Date: Wed, 10 May 2023 18:00:28 -0700
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From: John Harshman
Subject: Re: Human & ape evolution
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Xref: panix sci.bio.paleontology:77281
On 5/10/23 8:48 AM, Peter Nyikos wrote:
> > we'll (should) know that our Pliocene ancestors weren't even in Africa:
> Aren't lots of African monkeys free from the viral genes?
> IIRC baboons do carry them. Am I remembering wrong?
>> - "Evolution of type C viral genes: evidence for an Asian Origin of Man" RE Benveniste & GJ Todaro 1976 Nature 261:101-8 org/10.1038/261101a0
>> - "Lineage-specific expansions of retroviral insertions within the genomes of African great apes, but not humans and orangutans" CT Yohn cs 2005 PLoS Biol.3:e110 10.1371/journal.pbio.0030110
> You are lucky that John Harshman hasn't touched this claim in his arguments
> with JTEM so far, and that JTEM has not provided him with references.
> Instead he has just stated conclusions.
> I will remedy that problem today, by showing John these references.
No need. I see them. I can see only the abstracts, though. The obvious
question, which you ask, is whether any African primates, in addition to
humans, also lack this particular sort of insertion. There's no
particular reason why every African species should have experienced the
exact same set of infections. In particular, if chimps and gorillas both
experienced a wave of independent PTERV1 insertions while humans did
not, this is not good evidence that humans originated in Asia unless one
shows that such infections had a very high probability of happening to
any primate living in Africa. What we have there is only two data points
out of three examined. How likely would that be if all three had been
African? Nobody considers the question.
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