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What is a true "Arab" ?
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[QUOTE]Originally posted by Firewall: [QB] Genetic studies on Jews. Y-DNA of Ashkenazi Jews The term "Ashkenazi" is relatively well defined in these studies; it refers to Jews living or whose "paternal" ancestors immigrated to the following parts of central and eastern Europe: the Rhine Valley, France, Germany, the Netherlands, Austria, Hungary, former Czechoslovakia, Belarus, Lithuania, Poland, Romania, Russia, and Ukraine. This excludes the Jews of southern Europe (Balkans, Iberia and Italy). Non Jews in the latter areas are outside the definitions used for estimating the genetic make-up of the ancestral "neighbor" or "host" populations of Ashkenazim. All relevant Y-DNA studies have concluded that the majority of the paternal genetic heritage among Ashkenazim and other Jewish communities is similar to those found dominating Middle Eastern populations, and probably originated there. A smaller but still significant part of the Ashkenazi male-line population is more likely to have originated from European populations.[citation needed] A study of haplotypes of the Y chromosome, published in 2000, addressed the paternal origins of Ashkenazi Jews. Hammer et al.[28] confirmed that the Y chromosome of most Ashkenazi and Sephardi Jews contained mutations that are also common among Middle Eastern peoples, but uncommon in the general European population. This suggested that the male ancestors of the Ashkenazi Jews could be traced mostly to the Middle East. The proportion of male genetic admixture in Ashkenazi Jews amounts to less than 0.5% per generation over an estimated 80 generations, with "relatively minor contribution of European Y chromosomes to the Ashkenazim," and a total admixture estimate "very similar to Motulsky's average estimate of 12.5%." However, when all haplotypes were included in the analysis, the admixture percentage increased to 23% ± 7%.[Note 3] Hammer et al. add that "Diaspora Jews from Europe, Northwest Africa, and the Near East resemble each other more closely than they resemble their non-Jewish neighbors." In addition, the non-Jewish components in Ashkenazim and Sephardim are generally South European, specifically Greek. QUOTE- Ashkenazi men show low Y-DNA diversity within each major haplogroup, meaning that compared to the size of the modern population, it seems there were once a relatively small number of men having children. This possibly results from a series of founder events and high rates of endogamy within Europe. Despite Ashkenazi Jews representing a recently founded population in Europe, founding effects suggest that they probably derived from a large and diverse ancestral source population in the Middle East, who may have been larger than the source population from which the indigenous Europeans derived. [/QB][/QUOTE]
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