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A major genetic study of Ashkenazim was led by Johns Hopkins geneticist Eran Israeli-Elhaik in 2012. It concentrates on the compelling genetic evidence that eastern European Jewry's roots are not just in the Mid-East but, perhaps even more so, in the Caucasus, the mountainous heartland of ancient Khazaria.
Elhaik says that because of dissatisfaction with current theory he and others are forced to look again at the possibility that the Mid-East and Semitic genes present in eastern European Jewry may primarily have come from the east. His team is compelled to research this possibility because genetic testing of Ashkenazim continues to reveal a high percentage of genes particular only to the relatively isolated, mountainous region of the Caucasus. Having completed a thorough genetic study of Ashkenazim worldwide, he is launching an even more extensive analysis in his "Khazar DNA Project," specializing in testing Jews from the region of Khazaria itself.
Here are some of Dr. Elhaik's conclusions as a result of his genetic study of Ashkenazim:
The graphs in the study shows that the European Jews shows closer DNA similarity with Georgians, Armenians, Azerbaijanis and Turks instead of middle-eastern jews.Early German historians bridged the historical gap simply by linking modern Jews directly to the ancient Judeans (Figure 1); a paradigm that was quickly embedded in medical science and crystallized as a narrative. Many have challenged this narrative (Koestler 1976; Straten 2007), mainly by showing that a sole Judean ancestry cannot account for the vast population of Eastern European Jews in the beginning of the 20th century without the major contribution of Judaized Khazars and by demonstrating that it is in conflict with anthropological, historical, and genetic evidence (Dinur 1961; Patai and Patai 1975; Baron 1993).
…the question of European Jewish ancestry remained debated mainly between the supporters of the Rhineland and Khazarian Hypotheses. The recent availability of genomic data of Caucasus populations (Behar et al. 2010) allowed testing the Khazarian Hypothesis for the first time and prompted us to contrast the Rhineland and Khazarian Hypotheses. To evaluate the two hypotheses, we carried out a series of comparative analyses between European Jews and surrogate Khazarian and Judean populations posing the same question each time: are Eastern and Central European Jews genetically closer to Caucasus or Middle Eastern populations?
Our PC, biogeographical estimation, admixture, IBD, ASD, and uniparental analyses were consistent in depicting a Caucasus ancestry for European Jews. Our first analyses revealed tight genetic relationship of European Jews and Caucasus populations and pinpointed the biogeographical origin of European Jews to the south of Khazaria (Figures 3,4). Our later analyses yielded a complex multi-ethnical ancestry with a slightly dominant Near Eastern-Caucasus ancestry, large Southern European and Middle Eastern ancestries, and a minor Eastern European contribution…
We show that the Khazarian Hypothesis offers a comprehensive explanation to the results… By contrast, the Rhineland Hypothesis could not explain the large Caucasus component in European Jews, which is rare in Non-Caucasus populations (Figure 5) and the large IBD regions shared between European Jews and Caucasus populations attesting to their common origins. A major difficulty with the Rhineland Hypothesis, in addition to the lack of historical and anthropological evidence to the multi-migration waves from Palestine to Europe (Straten 2003; Sand 2009), is to explain the vast population expansion of Eastern European Jews from 50 thousand (15th century) to 8 million (20th century). This growth could not possibly be the product of natural population expansion (Koestler 1976; Straten 2007), particularly one subjected to severe economic restrictions, slavery, assimilation, the Black Death and other plagues, forced and voluntary conversions, persecutions, kidnappings, rapes, exiles, wars, massacres, and pogroms (Koestler 1976; Sand 2009). Such an unnatural growth rate (1.7-2% annually) over half a millennia, affecting only Jews residing in Eastern Europe is commonly explained by a miracle (Atzmon et al. 2010). Unfortunately, this divine intervention explanation poses a new kind of problem - it is not science. Our findings reject the Rhineland Hypothesis and uphold the thesis that Eastern European Jews are Judeo-Khazars in origin. Further studies are necessary to confirm the magnitude of the Khazars demographic contribution to the demographic presence of Jews in Europe (Polak 1951; Dinur 1961; Koestler 1976; Baron 1993; Brook 2006).
The remarkable close proximity of European Jews and populations residing on the opposite ends of ancient Khazaria, such as Armenians, Georgians, Azerbaijani Jews, and Druze (Figures 3, S2-3, 5), supports a common Near Eastern-Caucasus ancestry. These findings are not explained by the Rhineland Hypothesis and are staggering due to the uneven demographic processes these populations experienced in the past eight centuries.
Overall, the similarity between European Jews and Caucasus populations underscores the genetic continuity that exists among Eurasian Jewish and non-Jewish Caucasus populations…Our findings support a large-scale conversion scenario that influenced the majority of the population.
Finally, our findings confirm both oral narratives and the canonical Jewish literature describing the Khazar’s conversion to Judaism and the Judeo-Khazarian ancestry of European Jews (e.g., “Sefer ha-Ittim” by Rabbi Jehudah ben Barzillai [1100] , “Sefer ha-Kabbalah” by Abraham ben Daud [1161 CE], and “The Khazars” by Rabbi Jehudah Halevi [1140 CE]) (Polak 1951; Koestler 1976). We emphasize that we do not intend to cast doubt on Behar’s et al. (2010). and Atzmon et al.’s (2010) remarkable findings, but rather propose a comprehensive interpretation that explains the patterns they observed in whole genome data, those reported in the literature for uniparental data, and those observed here using both types of data. The point in these studies is that European Jews had a single Middle Eastern origin [that] is incomplete as neither study tested the Khazarian Hypothesis, to the extent done here.
Our findings support the Khazarian Hypothesis depicting a large Caucasus ancestry along with Southern European, Middle Eastern, and Eastern European ancestries, in agreement with recent studies and oral and written traditions. We conclude that the genome of European Jews is a tapestry of ancient populations including Judaized Khazars, Greco-Romans and Mesopotamian Jews, and Judeans and that their population structure was formed in the Caucasus and the banks of the Volga with roots stretching to Canaan and the banks of the Jordan.
You can read full study here;
http://eelhaik.aravindachakravartila...ngLink2012.pdf
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