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Archiver > GENEALOGY-DNA > 2010-02 > 1266798467


From: "Ken Nordtvedt" <>
Subject: Re: [DNA] Y chromosome SNP occurring in More than onePaternalLineages
Date: Sun, 21 Feb 2010 17:27:47 -0700
References: <4B81CE1A.1090501@comcast.net>


----- Original Message -----
From: "Bonnie Schrack" <>

If a SNP were *not* a product of recombination, and were found to have
mutated in more than one haplogroup, these multiple mutations could be
caused by an unstable location on the Y chromosome which was prone to
shift back and forth unpredictably between two alleles. This would
make such a location entirely unsuitable for use on the phylogenetic
tree.

[[ That's a big overstatement. It's all a matter of degree how suitable a
mutation is for the phylogenetic tree. Every snp has mutated multiple times
in the y tree. That's fairly easy to demonstrate. Ken ]]



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