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Archiver > GENEALOGY-DNA > 2008-12 > 1228126508


From: Vincent Vizachero <>
Subject: Re: [DNA] TRMCA for R1b1
Date: Mon, 1 Dec 2008 05:15:08 -0500
References: <3D764AD2C91348178D749DB460935D31@PC>
In-Reply-To: <3D764AD2C91348178D749DB460935D31@PC>


It is a challenge for the Semino theory to explain how it is that the
forms of R-M269 found in the eastern end of its range (that is, into
the Near East and Central Asia) are the most ancestral forms (from a
phylogenetic standpoint) and yet have very similar STR haplotypes.
The haplotype similarity can not be reconciled with long periods of
isolation and separation (during the LGM, for example), yet a mad dash
from Iberia to Iraq after the LGM seems equally unlikely.

So even though Semino does accomodate an eastern origin for R1,
putting that origin 30 kya has many implications about diversity and
dispersion that are incongruent with the actual data.

VV


On Dec 1, 2008, at 1:47 AM, Lancaster-Boon wrote:

> 2. Doesn't the theory under discussion in any case state that the
> ancestry
> of R1b, despite expanding from Iberia, is from the East, which once
> again
> pretty much has to mean right on the edges of Europe at the very
> closest?

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