GENEALOGY-DNA-L Archives

Archiver > GENEALOGY-DNA > 2012-03 > 1331133670


From: Paul Wright <>
Subject: Re: [DNA] DNA matching of cousins
Date: Wed, 7 Mar 2012 09:21:10 -0600
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>
In-Reply-To: <CAA-Ub_Bp8aTiDLGGVVvYkwOMQ0TNiwZDc1kM4gNK7qpvuDortQ@mail.gmail.com>


Yes, fat finger error - should be 6750


On Wed, Mar 7, 2012 at 2:59 AM, Ann Turner <> wrote:

> Maybe Paul meant 6750? I've seen several numbers like yours for
> parent/child, Tim, when you double what is reported on the FF screen (about
> 3380). Curiously, a person who transferred 23andMe results to a new account
> at FTDNA displayed a similar number and was identified as a parent/child
> with the FF account, rather than an identical twin.
>
> Ann Turner
>
> On Wed, Mar 7, 2012 at 12:08 AM, Tim Janzen <> wrote:
>
> > Dear Paul,
> > Could you explain to me where you got the 7750 cM figure for
> Family
> > Finder? My personal results when looking at comparisons between my
> parents
> > and me and my wife's parents and my wife indicates that the sum of the
> > autosomal DNA in cMs as per FF is approximately 6761 cMs (averaging
> these 4
> > comparisons from the FF chromosome browser (6764.56, 6762.6, 6757.4, and
> > 6759). I would suggest that Mary Alice use 6761 rather than 7750 for her
> > calculations. Per my calculations the sum of the autosomal DNA in
> 23andMe
> > is 7098 cMs.
> > Sincerely,
> > Tim Janzen
> >
> >
> > -----Original Message-----
> > From:
> > [mailto:] On Behalf Of Paul Wright
> > Sent: Tuesday, March 06, 2012 6:13 PM
> > To: M. A. Farrell;
> > Subject: Re: [DNA] DNA matching of cousins
> >
> > first, only take sum of segments 5 cM or larger, then divide by 7750.
> >
> > also note, FF comparisons do not include X chr like RF.
> >
> >
> >
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