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Archiver > GENEALOGY-DNA > 2005-09 > 1128128833


From: Doug McDonald <>
Subject: Re: [DNA] STR mutation rates
Date: Fri, 30 Sep 2005 20:07:13 -0500
References: <1f9.1337e671.306f2a10@aol.com> <433DD40B.9020304@kerchner.com>
In-Reply-To: <433DD40B.9020304@kerchner.com>


charles wrote:

> Ann:
>
> At this point why can't we just collect the data. We can always decide
> later which to include or not include depending on how we want to
> slice and dice the data. To answer your question, I would guessimate
> that the line should have at least 500 marker mutation event
> opportunities. But other more talented than I may wish to offer a hard
> number.
>


That's about right. I assumed a three standard deviation difference, and
that led
to needing 700 father-son pairs (or generations in a tree) in each of
the two
different groups, for 25 markers.

Doug McDonald



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