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Archiver > GENEALOGY-DNA > 2008-05 > 1211224929


From: "Lawrence Mayka" <>
Subject: Re: [DNA] S21/S28 Split+m223 stuff
Date: Mon, 19 May 2008 14:22:09 -0500
In-Reply-To: <018701c8b9dc$c8cbeb10$6400a8c0@Ken1>


Because the S28+ population is rs34276300+ and the S21+ population is
rs34276300- (which is ancestral), the common MRCA of S28 and S21 must also
be rs34276300-. Thus, your comment that the S28 MRCA is only barely younger
than the S21/S28 MRCA implies that rs34276300 and S28 occurred in rapid
succession.

Am I correct that the common MRCA you have calculated will _not_ change
significantly with new data, whereas additional high-diversity S21
haplotypes (e.g., from Ukraine) might force your S21 MRCA back almost as far
as the common S21/S28 MRCA?

> [mailto:] On Behalf Of Ken Nordtvedt
> I get an age back to the common MRCA for S21 and S28 to be
> 3780 years. The S28 MRCA is almost immediately after that
> event, while the S21 MRCA does not occur until about 500
> years later, 3270 years ago.


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