GENEALOGY-DNA-L Archives

Archiver > GENEALOGY-DNA > 2009-12 > 1260934053


From: Michael Walsh <>
Subject: Re: [DNA] R-L21 Plus news - downstream branches to be better defined
Date: Tue, 15 Dec 2009 21:27:33 -0600


---> My response:
A number of genealogical geneticists have already indicated that at
least 67 markers are needed to discern between R1b1b2 people. Most
notable, probably, is Dr. Michael Hammer's statements to this effect
this March. The problem is that R1b1b2 people's haplotypes look very
much alike so more markers are needed to differentiate between people.
There are cases of 25 of 25 or 35 of 37 matches that turned out to be
in totally different sub-clades of R1b1b2.

---> CeCe Moore <> wrote:
Can you please explain to me why R1b1b2s need to test out to 67.
My husband is predicted R1b1b2 at 37 markers.
Thanks!

---> Michael Walsh said,
"Over 65% of these 906 L21* folks have tested out to 67 STR markers.
Bravo! All R1b1b2 folks need to."

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