GENEALOGY-DNA-L ArchivesArchiver > GENEALOGY-DNA > 2003-11 > 1068585683
From: Flanagan <>
Subject: Re: [DNA] DYS464 / new primer
Date: Tue, 11 Nov 2003 16:21:23 -0500
I'm not a geneticist [wishing more and more that I were] but I do have
access to the article. This is part of what the article says about how
they arrived at the mutation rate.
3.3. Mutation-rate estimate We analyzed DYS464 in 70 meioses from
confirmed father/son pairs. As shown in Fig. 4 we identified two
mutations. Considering peak height as a quantitative indicator of
the allele copy number, the genotypes of father/son pair #1 were
13?14?15?18 and 14?14?15?18 and those of father/son pair #2 were
14?15?17?17 and 15?15?17?17.
The samples were taken from 205 individuals, consisting of 135 unrelated
men and 70 sons. Hope that this helps folks a bit.
>Patrick, do you have access to the full text? I'm curious about the mutation
>rate. First, was it father-son pairs? Did they give the actual differences?
>I see the confidence interval is very wide, because there were just two
>mutations observed and the sample size is small. I assume the two mutations could
>have come from ANY of the four copies of DYS464. It seems to me that it would
>be more appropriate to divide the observed mutation rate by 4, since there were
>70x4 opportunities to observe a mutation in the set.
>Ann Turner - GENEALOGY-DNA List Administrator
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Abdul-Salaam Gary MacRuaidhri O'Flannagain