23andMe Ancestry Lab Test for DNA Shared with Ashkenazim

It looks as if we have a high level of DNA shared with Ashkenazi meaning that gramps was highly probably Jewish. This is the strongest confirmation yet of the guess that Jim made. I have asked a 23andMe expert for confirmation of my interpretation.

It is worth bearing in mind that the Most Recent Common Ancestor, the progenitor of our E haplogroup was born between 2175 BC and 875 BC. By comparison, while Shem, son of Noah was the progenitor of the Semitic peoples, Abraham, the common ancestor of Jews, Muslims and Christians lived about 2000 BC, give or take a significant handful of years. The Phoenicians lived as an identifiable group from about 3200 BC to 312 BC. I think that while E haplotype E1b1b1c makes up about 10% of modern Ashkenazi and Sephardic Jews, it is conceivable that our line came up through one of the non-Hebrew Phoenician trading posts around the Mediterranean. It is conceivable, but probably a low percentage option given the nature of migration to North America in the 1800s.

My test results are below, using the 23andMe Ancestry Lab test utility, turning on the the Ashkenazi test and indicating 1 grandparent, gramps, from the same country (whatever that is, even if it is the US).

If set Minimum Segment Length in cM @


% Declared Ashkenazim at each of the 4 lengths

16.1%-29.9% Brian 20.2%-36.9%

Not Declared
14.6%-28.4% Brian 18.5%-36.2%

Brian did the same test and produced the following results at 7.5 cM. As shown above, his results were 20.2%-36.9% declared, 18.5%-36.2% undeclared. All of these results are significantly higher than my results.

Note: also read the GEDmatch Admixture posting under Category DNA or Research. It is a geographical breakdown of the DNA.


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