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Posted by / 18-Aug-2017 11:29

Dating jewish russian toronto

'Previous genetic studies of blood group and serum markers suggested that Jewish groups had Middle Eastern origin with greater genetic similarity between paired Jewish populations,' says senior study author, Dr. 'More recent studies of Y chromosomal and mitochondrial DNA have pointed to founder effects of both Middle Eastern and local origin, yet, the issue of how to characterize Jewish people as mere coreligionists or as genetic isolates that may be closely or loosely related remained unresolved. Yet the genomes of the Jewish Diaspora groups have distinctive features that are representative of each group's genetic history.' says Dr. 'Our study demonstrated that the studied Jewish populations represent a series of geographical isolates or clusters with genetic threads that weave them together,' added Dr. The researchers identified distinct Jewish population clusters that each exhibited a shared Middle Eastern ancestry, proximity to contemporary Middle Eastern populations and variable degrees of European and North African genetic intermingling. The two major groups, Middle Eastern Jews and European Jews, were timed to have diverged from each other approximately 2500 years ago.

Southern European populations show the greatest proximity to Ashkenazi, Sephardic and Italian Jews, reflecting the large-scale southern European conversion and admixture known to have occurred over 2,000 years ago during the formation of the European Jewry. Ostrer noted, 'The study supports the idea of a Jewish people linked by a shared genetic history.

Previous genetic studies of blood group and serum markers suggested that Jewish groups had Middle Eastern origin with greater genetic similarity between paired Jewish populations.

However, these and successor studies of monoallelic Y chromosomal and mitochondrial genetic markers did not resolve the issues of within and between-group Jewish genetic identity.

The IBD segment sharing and the proximity of European Jews to each other and to southern European populations suggested similar origins for European Jewry and refuted large-scale genetic contributions of Central and Eastern European and Slavic populations to the formation of Ashkenazi Jewry.

The team then compared these genetic profiles to those of non-Jews in the same geographic regions based on data from the Human Genome Diversity Project....

Excerpts: "Different communities of Jews around the world share more than just religious or cultural practices -- they also have strong genetic commonalities, according to the largest genetic analysis of Jewish people to date.

But the study also found strong genetic ties to non-Jewish groups, with the closest genetic neighbours on the European side being Italians, and on the Middle Eastern side the Druze, Bedouin and Palestinians.

The genomic analysis also provided information about selection pressures on mutations prevalent in the Ashkenazi Jewish population, such as those leading to conditions like Tay-Sachs disease or mutations in cancer susceptibility genes like BRCA1.

[...]" Gil Atzmon, Li Hao, Itsik Pe'er, Christopher Velez, Alexander Pearlman, Pier Francesco Palamara, Bernice Morrow, Eitan Friedman, Carole Oddoux, Edward Burns, Harry Ostrer.

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