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Do Double relationships affect DNA matching?

Replies: 6

Re: Do Double relationships affect DNA matching?

Posted: 20 Sep 2013 11:53AM GMT
Classification: Query
I have a somewhat different (multi-part) question on the same topic:

IF you have double-cousin relationships in a family tree, and since this theoretically suggests more DNA locus matches than for a single cousin relationship, will AncestryDNA estimate the double cousin to be closer to me in generations (e.g. a "3rd or 4th cousin") rather than a proper placement in a more distant generation (e.g. "5th or 6th cousin")? That is, does the double-cousin linkage "fool" or confound the generational placement estimated by AncestryDNA?

In addition, does double-cousin linkage artificially increase the confidence level (e.g. "95%") of AncestryDNAs for a suggested match?
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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