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Archiver > GENEALOGY-DNA > 2012-03 > 1331175749


From: Ann Turner <>
Subject: Re: [DNA] DNA matching of cousins
Date: Wed, 7 Mar 2012 19:02:29 -0800
References: <30845370.1331085606548.JavaMail.root@elwamui-rubis.atl.sa.earthlink.net><CAJet0tq7XRUjFVskmdNhiorrzL+cpS40HAh7J9Hw3fscGP_vJA@mail.gmail.com><065d01ccfc39$7cb76170$76262450$@net><CAA-Ub_Bp8aTiDLGGVVvYkwOMQ0TNiwZDc1kM4gNK7qpvuDortQ@mail.gmail.com><CAJet0torwOuvOFeXd=Af86ryTG7qOC-x20pCSki8i9Ef8kfPVA@mail.gmail.com><CAJet0tp4hOh=XY-aSFQTh9fJfxKBvQf7j8sWBzt4wvb_7d3ZKw@mail.gmail.com><BLU151-W547783CF718830FD882E9FB5560@phx.gbl><CAKBVi9mwkSg7HMDadTikHcK7mYhbKpsiJBSsjFpP4crOyCHJtw@mail.gmail.com>
In-Reply-To: <CAKBVi9mwkSg7HMDadTikHcK7mYhbKpsiJBSsjFpP4crOyCHJtw@mail.gmail.com>


Alas, I have a counter-example. By some fluke, the entire length of
chromosome 4 has been passed down in my family to paternal uncle, my sister
and me (and therefore our father) and virtually all of (196 cM) it to my
uncle's grandson (my first cousin once removed). This is undoubtedly an
outlier, but just another sign that it's hard to come up with foolproof
guidelines once you're past full vs half siblings.

Ann Turner

On Wed, Mar 7, 2012 at 5:10 PM, John S Walden <> wrote:

> In my data I have 3 1st Cousins and 3 1st cousins 1R
>
> The % do not overlap
> But the difference is much clearer looking at just the longest segment
> Average of 111 cM and 59 cM respectively
> Could this be a better discriminator for this case?
>
> John W
>


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