GENEALOGY-DNA-L Archives

Archiver > GENEALOGY-DNA > 2008-05 > 1210689459


From: Robert Stafford <>
Subject: Re: [DNA] Genetic Distance and DYS464
Date: Tue, 13 May 2008 07:37:39 -0700 (PDT)
In-Reply-To: <50BBBD09E0AD4C1785F704233D82E936@homestudy>


They do count mismatches instead of GD for DYS464 and CDY, although the former doesn't seem to be a particularly fast marker. I recommend that people count matches on all markers and then consider the multistep mismatches separately. If the haplotypes are close, multistep mutations probably occurred in a single event, making GD misleading.

Note that you have a 35/37 match either way you count GD. A 34/37 match would mean that you match on only 34 out of the 37 markers tested.

Bob Stafford

Ned Jimmerson <> wrote:
Hi. My response from FTDNA when I
asked them about Their counting of DYS 464 was that They counted each mismatch in 464 as 1 in other words Your Cousin Lane and the other Lane would total 5 on 464 alone. let alone the other 5 mismatches. if They are now counting 464 differences in total as 1 mismatch that would change My one 37 marker YDNA Match from 34/37 to 35 37. at a GD of even 5 on 37 Markers My impression is these Lanes are not related. You might ask FTDNA how they count DYS464 to see what answer You receive. Enjoy the Day, Ned. Matter; Where ,You go, There You ,are.


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