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jewish ancestry from DNaA errors explained -will be improved

Replies: 3

Re: jewish ancestry from DNaA errors explained -will be improved

Posted: 24 Aug 2014 2:43PM GMT
Classification: Query
I think the tests are reliable but overly optimistic. I have not done any testing with Ancestry but I have done it with FamilyTree DNA. My results are similar to the poster's wife: about 350 3rd-5th cousins and about 3,500 total matches.

I think there are two root causes.
1. Ashkenazi jews are very inbred. There were a lot of marriages between cousins, meaning that we share more common DNA than more genetically diverse populations. The DNA testing firms should probably set higher matching thresholds for these inbred (endogamous) populations.
2. I have a feeling that a disproportionate number of those testing DNA are Jewish.
SubjectAuthorDate Posted
mensa73 12 Aug 2014 7:15PM GMT 
PeterDawson99 17 Aug 2014 4:10PM GMT 
mensa73 18 Aug 2014 5:48PM GMT 
creback1 24 Aug 2014 8:43PM GMT 
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