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Archiver > GENEALOGY-DNA > 2011-01 > 1293925567


From: vernade didier <>
Subject: Re: [DNA] How old is Y-Chromosome Adam?
Date: Sat, 1 Jan 2011 23:46:07 +0000 (GMT)
In-Reply-To: <768303.89388.qm@web408.biz.mail.mud.yahoo.com>


Dear Vincent,
There were 2 posts after mine , one from Dienekes saying that slow and fast mutating markers are still giving different estimates ; and yours (below). These are 2 different positions.

I agree, I should have made it 80000 - 100000 and I find it reasonably good. The point is that with correct sampling and a tool such as Ken's Excel file one can end up with TMRCAs that fit.
I believe that the 80000 - 100000 range is more likely because of sampling than anything wrong with the TMRCA calculation method.
I found more A haplogroup among arab projects and I am now looking for B haplogroup haplotypes. (BT seems extremely rare).

Didier


vv wrote :
> With two estimates in this thread,
> one at 85 kya and one at 100 kya I'd  say
> that  - to the extent our model is accurate - your
> "confirmed" 70-80 kya
> estimates would appear to be low.





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