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Archiver > GENEALOGY-DNA > 2008-06 > 1213025033


From: "Alfred A. Aburto Jr." <>
Subject: Re: [DNA] Generations2 program and the CMH-12 extended haplotypes...
Date: Mon, 09 Jun 2008 08:23:56 -0700
References: <936471110806080753k1912d8e7s787d45c8d71666a@mail.gmail.com><009f01c8c97a$e40205b0$6400a8c0@Ken1> <484C0D1B.90109@sbcglobal.net> <00f801c8c988$87da6030$6400a8c0@Ken1><484C81C9.7080509@sbcglobal.net>
In-Reply-To: <484C81C9.7080509@sbcglobal.net>


Oops!!!
I misread Ken's spreadsheet results for the 67 marker J1 Cohen case!
There are two results given. The first is G*(A), and the second is an
estimate of G(A) which is the MRCA age! Previously I incorrectly used
G*(A).

Here are the correct results:
(1) MRCA age of J1 Cohen's, 29 haplotypes of 67 markers, 30
years/generation: 2100 years ago
(2) MRCA age of J1 Cohen's, 66 haplotypes of 37 markers, 30
years/generation: 2300 years ago.

The MRCA ages are virtually the same! This gives one confidence that we
are near the correct age for the J1 Cohen's (the one and only group of
Cohen's in J1 as far as I know). Still it would be valuable to have
other J1 Cohen's test 67 markers and upload their results to the Cohen
DNA Project and/or the Y-DNA J Project.
Al


> Alfred A. Aburto Jr. wrote:
> :-)
> I should listen to Ken more carefully! I just deleted the 38-67 marker
> data. I didn't delete the entire columns! Thanks Ken, for getting me right!
>
> With the 66 J1 Cohen haplotypes having 37 markers tested the MRCA age
> came out as 78.03829 generations or ~2300+/-??? years ago (using 30
> years per generation). This is "significantly" different (depends on the
> confidence interval) than the 29 J1 Cohen haplotypes having 67 markers
> tested (MRCA age was ~1700 years ago). So, clearly more data of the
> "right" kind (J1 Cohen's) is needed, we really need to get more J1
> Cohen's to test at least 37 markers, but 67 would be best if at all
> possible!
> Al
>
>
> > Ken Nordtvedt wrote:
>
>> You should be able to proceed with your 37 marker set. Just delete the
>> columns for markers 38-67
>>
>> Make sure your 1 to 37 are aligned correctly. Then you should get an
>> output. I really don't know what went wrong with your attempt.
>>
>>

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