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Archiver > GENEALOGY-DNA > 2007-05 > 1179263572


From: Vincent Vizachero <>
Subject: Re: [DNA] Allele length was Different Subject
Date: Tue, 15 May 2007 16:12:52 -0500
References: <422728.65041.qm@web81105.mail.mud.yahoo.com>
In-Reply-To: <422728.65041.qm@web81105.mail.mud.yahoo.com>


On May 15, 2007, at 3:03 PM, Gary Felix wrote:

> It would seem the lack of repeats at 390m and the lack of 390p all
> together would be ancestral given the stability of this marker and
> the lack of expansion in this old population?

No, the "normal" structure (e.g. 25 repeats, 220 bp (TCTG)8 (TCTA)12
(TCTG)1 (TCTA)4) is surely the ancetral structure. DYS390m and
DYS390p deletions are always downstream of normal structures and
never upstream.

Vince


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