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Archiver > GENEALOGY-DNA > 2007-03 > 1172796954


From: "Alfred A. Aburto Jr." <>
Subject: Re: [DNA] Challenge to YDNA J Gurus
Date: Thu, 01 Mar 2007 16:55:54 -0800
References: <001901c75c2a$8ba69340$6400a8c0@Ken1> <45E75312.8020009@sbcglobal.net><001001c75c53$3e13bb70$6400a8c0@Ken1>
In-Reply-To: <001001c75c53$3e13bb70$6400a8c0@Ken1>


> Ken Nordtvedt wrote:

>Hopefully, you can publish on the list the 78 marker modal haplotypes for J1
>and J2. The problem I am having in contemplating those modal haplotypes is
>that I know either J1 or J2 or both have already been divided into robust
>subclades, so a modal for the total which combines separate and robust
>clades is problematic unless the differences in those clade modal haplotypes
>are minor compared to the J1/J2 differences.
>
>but I read further down you are separating J2 into its clades, so it looks
>like you are on top of things. Ken
>
>p.s. Did you divide by factor two? I get 500 times 55 divided by 78 divided
>by 2 = 176 generations or 5000 years if the two clades were equal distance
>from their split. Of course 3000 and 7000 years from the split would work
>as well. As more and more subclades are modalized and a matrix is
>established for GDs, the possibilities get more restricted.
>
>


Ok, to be correct with Walsh's program, I find that there are 33 out of
78 marker mismatches between J1 and J2. Now using Walsh's program I find
using 33/78, mu=0.002, 30 years/generation, that J1 & J2 differ by 194
generations or about 5820 years at 97.5% confidence. I did _not_ divide
by two here... I think though that Walsh would warn me that with so many
mismatches that it might be better to use the single-step model, but I
have not programmed that yet...I'll post the J1 & J2 modals soon ...
Al

PS: Oops!! I forgot to send this one (drafted earliar)

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