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Do Double relationships affect DNA matching?

Replies: 6

Re: Do Double relationships affect DNA matching?

Posted: 5 Aug 2012 12:13AM GMT
Classification: Query
That's probably due to both intermarriage and well-documented families. If you or another tester are descended from the same ancestors on more than one line, you're likely to inherit more than the expected average DNA contribution from those ancestors. In the case of multiple siblings from one family marrying multiple siblings from another, the effect should be similar.

Also, when a good paper trail exists for a family, such as a quality published genealogy, lots of the descendants are likely to trace those ancestral lines back to the progenitors.
SubjectAuthorDate Posted
Quentin Robin... 5 Aug 2012 12:16AM GMT 
nathan_mn 5 Aug 2012 6:13AM GMT 
ChuckSexton98 20 Sep 2013 5:53PM GMT 
oma2004 21 Sep 2013 5:10PM GMT 
Robert Staffo... 21 Sep 2013 6:01PM GMT 
twotzus 22 Sep 2013 5:00PM GMT 
LKBow 27 Sep 2013 9:32PM GMT 
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