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Archiver > DNA-R1B1C7 > 2008-12 > 1229015172


From:
Subject: Re: [R-M222] L21
Date: Thu, 11 Dec 2008 12:06:12 EST


In a message dated 12/11/2008 10:20:37 A.M. Central Standard Time,
writes:

Although they are all present, they are present in quantities so low that
makes it very difficult to believe that L21+ is a parent of M222+. Ancestral
to, possibly. Parental to, I doubt.


L21 is ancestral and parental to M222+ until another SNP comes along. The
fact that M222+ is so radically different from the rest of L21 might just
speak to the age of L21. I wonder if anyone out there has taken the L21+/M222+
samples and found a TMRCA estimate for the entire cluster? The latest
estimates for M222+ per David Wilson center on 1,500 to 2000 years BP. I'd be
willing to bet L21 is twice as old at a minimum for the haplotypes to have grown
so far apart.
The other SNPS downstream of L21 are basically meaningless at present.


John




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