GENEALOGY-DNA-L Archives

Archiver > GENEALOGY-DNA > 2006-02 > 1139856508


From: Doug McDonald <>
Subject: Re: [DNA] Re: Sorenson Marker Details
Date: Mon, 13 Feb 2006 12:48:28 -0600
References: <200602111735.k1BHZGtj000311@lists5.rootsweb.com> <ce359e304b81de38e3a567638e68d529@langolier.net>
In-Reply-To: <ce359e304b81de38e3a567638e68d529@langolier.net>


jim berry wrote:
> OK. I've studied Doug's or Ann's smgf graphs and chart till I'm blue in
> the face (or cross-eyed) and still don't get it. Then I studied Leo's
> calculations and it may have become a bit clearer but I'm not sure.
>


One thing is that while we do not "know" if different haplogroups
have intrinsically different mutation rates for one or more markers,
we do have quite a bit of data that says that alleles with more
repeats ... say an 18 versus a 12 for 464 (be it a or d), or a
33 versus a 27 for 449 ... have a faster mutation rate, overall.

And since different haplogroups have different "typical" allele
counts, a haplogroup with a lower typical count for a given
marker will be expected to have, on average, a lower rate than
a haplogroup with a higher typical count.

Doug McDonald

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