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To which we might add that not even jews agree on the 'meaning' of the available genetic evidence (see below for a 2008 commentary from an american jew).

To that, we might add that all this is in any case totally irrelevant. Are you really suggesting that the world should introduce racism based on genetic background? What would you do with the 40% of Americans who have black genes in their genetic makeup?

Hillel Halkin. "Jews and Their DNA." Commentary Magazine (September 2008).

.... In a class by itself is the mitochondrial DNA of Ashkenazi women. It does not correlate closely with the DNA of non-Jewish women in Western, Central, or Eastern Europe and it has a large Middle Eastern component. ...the Y chromosomes of Ashkenazi Jews have more in common with those of Italians and Greeks than with those of West Europeans. ... An 11.5-percent incidence of R-M117 among Ashkenazi Jews in general is easily explainable: the mutation could have entered the Jewish gene pool slowly, in small increments in every generation, during the thousand years of Ashkenazi Jewry's existence. ... But the 52-percent rate among Levites is something else. Here we are dealing not with a gradual, long-term process (for no imaginable process could have produced such results), but with a one-time event of some sort. ... Both of our studies, therefore, raise the possibility that the original R-M117 Levites were Khazarian Jews who migrated westward upon the fall of the Khazar kingdom. ... Analyzing the data, the American-Israeli-British study concludes that the number of R-M117 Levites absorbed by Ashkenazi Jewry ranged from one to fifty individuals. ... Nor do we know the percentage of Khazars possessing M117, which is found in 12 or 13 percent of Russian and Ukrainian males today. If these were also its proportions among the Khazars, there would have been seven non-M117 Khazars joining or founding Ashkenazi Jewry for every Khazar who had the mutation. In sum, even if the R-M117 Levites are traceable to Khazaria, the total flow of Khazarians into the East European Jewish population could have been anywhere from a single person to many thousands. If it was the latter, the Khazar input was significant, as David Goldstein suspects it was; if the former, it was trivial, as Jon Entine believes. ... I myself have long suspected, starting far before I knew anything of historical genetics or Arthur Koestler's The Thirteenth Tribe, that I have Khazar blood in me. ...

http://www.khazaria.com/genetics/abstracts-jews.ht...

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The Jewish Daily Forward

The Fallacy of Biological Judaism

... Given the historical context of the Nazi “experiment,” it is all the more remarkable that Jews all over the world have been flocking to the new technology of DNA-based diagnosis, eager to lend their individual genomes — each a surviving data point from the terrible experiment in negative selection — to a revisiting of this issue of biological Judaism.

At a recent meeting of the Association of Orthodox Jewish scientists and the Columbia Center for the Study of Science and Religion, it became clear that Jewish curiosity has provided sufficient genetic material to give a perfectly clear negative answer: There is no support in the genomes of today’s Jews for the calumnious and calamitous model of biological Judaism. Though there are many deleterious versions of genes shared within the Ashkenazic community, there are no DNA sequences common to all Jews and absent from all non-Jews. There is nothing in the human genome that makes or diagnoses a person as a Jew....

http://www.forward.com/articles/9406/

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