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Archiver > GENEALOGY-DNA > 2010-03 > 1270008858


From: (John Chandler)
Subject: Re: [DNA] Questions about alternate means of searching DNA Genealogy
Date: Wed, 31 Mar 2010 00:20:37 -0400
References: <410-22010312921619605@earthlink.net><8a23028b1003301621g788feb44g98e8ff28379ad75f@mail.gmail.com>
In-Reply-To: <8a23028b1003301621g788feb44g98e8ff28379ad75f@mail.gmail.com>(message from Sam Sloan on Tue, 30 Mar 2010 19:21:08 -0400)


Sam wrote:

> I think it is extremely unlikely that two mutations could occur in
> just one generation.

It depends on how many markers (and which markers) you compare. If
you compare the FTDNA 67-marker panel, the total of the mutation rates
is more than 1/5. Therefore, the probability of finding two mutations
is about 1/20. Not exactly common, but no so extremely unlikely after
all.

John Chandler


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