GENEALOGY-DNA-L ArchivesArchiver > GENEALOGY-DNA > 2011-02 > 1297524783
From: Paul Wright <>
Subject: Re: [DNA] x chromosome puzzle
Date: Sat, 12 Feb 2011 09:33:03 -0600
What is the SNP count? 23andMe has different SNP and length thresholds for
male-male, female-female, and male-female X chr matches.
On Sat, Feb 12, 2011 at 9:28 AM, Aggi-Rose Reddin <>wrote:
> Hoping someone here can explain this one for me re a match at 23andme:
> woman has a 30cM share on the x chromosome with my 2 sons but nothing
> shared with either myself or my mother.
> Also, she is predicted as 4th cousin to my sons.
> She is adopted so we can't just figure this out via paper trails.
> Is our connection definitely/only/necessarily [?] through my father's side?
> And why doesn't she share with me? Is that due to recombination
> effect or something else?
> To unsubscribe from the list, please send an email to
> with the word 'unsubscribe' without the
> quotes in the subject and the body of the message