Archiver > GENEALOGY-DNA > 2010-03 > 1268667171

From: Al Aburto <>
Subject: Re: [DNA] Clades, Definitions, Discoveries, FTDNA
Date: Mon, 15 Mar 2010 08:33:07 -0700
References: <>, , ,<SNT115-W100A5F4E30C0231B9E890ACC2E0@phx.gbl>, , ,<016301cac3e3$fe0b33e0$5e82af48@Ken1>, ,<SNT115-W196CFB24CCDD653D7C3D50CC2E0@phx.gbl>, ,<01ba01cac3fb$87b368d0$5e82af48@Ken1>,<SNT115-W3785126A2D053855EFBF3ACC2E0@phx.gbl>,<><SNT115-W517E449E68D5DAAE7B30A9CC2E0@phx.gbl>
In-Reply-To: <SNT115-W517E449E68D5DAAE7B30A9CC2E0@phx.gbl>

Yes, a SNP is a specific mutation, at a specific spot on the
Y-chromosome. "Mutations per SNP" would be like asking how often does
L21 mutate.
"Mutations per bp" and "mutations per SNP" are quite different
concepts. One is general, the other specific.

> On 3/15/2010 8:12 AM, Steven Bird wrote:
> Vincent,
> According to the source I quoted earlier, "Genetics" by Hartwell et al 2008, the class of polymorphism that is called a "SNP" has a locus size of a single bp. The rate of mutation is given as 1*10 to the negative 9th. So expressing mutation rates as mutations per base pair vs. mutations per SNP would not appear to be different at all. I am missing something?
> Steve

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