GENEALOGY-DNA-L Archives

Archiver > GENEALOGY-DNA > 2012-02 > 1328457507


From: "Kenneth Nordtvedt" <>
Subject: Re: [DNA] Question regarding Markers DYS459 and DYS464
Date: Sun, 5 Feb 2012 08:58:27 -0700
References: <166581502.701306.1328445340534.JavaMail.root@sz0128a.westchester.pa.mail.comcast.net>
In-Reply-To: <166581502.701306.1328445340534.JavaMail.root@sz0128a.westchester.pa.mail.comcast.net>


1. I think likely explanation is that one of the the reported results is a
misread or lazy read in the lab. Both will show bumps at 15 and 18 repeats;
their relative size is for interpretation.
I'd personally call it a GD of 0 or better yet consistently ignor DYS464 in
coming up with a GD.

Even if both reads were true, I'd interpret it as a single recLOH event,
contributing a GD of 1


-----Original Message-----
From:
Sent: Sunday, February 05, 2012 5:35 AM
To:
Subject: Re: [DNA] Question regarding Markers DYS459 and DYS464

I asked a question a couple of days ago that I don't think was answered. If
it was, I apologize for my density. If three members of a family are 15 15
15 18, and the fourth is 15 15 15 15 18 18, what happened? Was that a
recLOH, two mutations, or a single mutation that triggered a double
addition? In any case, should it be counted as a GD change of one or, as
FTDNA has it, two?
I asked FTDNA for an opinion a week ago, but I gather they prefer not to
comment.
Thanks, Paul

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