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הגדרות אשכול | אפשרויות הצגת נושא |
04-11-07, 11:55
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#32 | |
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מנהל ראשי
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ציטוט:
With a new technique based on the male or Y chromosome, biologists have traced the diaspora of Jewish populations from the dispersals that began in 586 B.C. to the modern communities of Europe and the Middle East. The analysis provides genetic witness that these communities have, to a remarkable extent, retained their biological identity separate from their host populations, evidence of relatively little intermarriage or conversion into Judaism over the centuries. Another finding, paradoxical but unsurprising, is that by the yardstick of the Y chromosome, the world's Jewish communities closely resemble not only each other but also Palestinians, Syrians and Lebanese, suggesting that all are descended from a common ancestral population that inhabited the Middle East some four thousand years ago. The ancestral Middle East population from which both Arabs and Jews are descended was a mixture of men from eight of these lineages. Among major contributors to the ancestral Arab-Jewish population were men who carried what Dr. Hammer calls the "Med" lineage. This Y chromosome is found all round the Mediterranean and in Europe and may have been spread by the Neolithic inventors of agriculture or perhaps by the voyages of sea-going people like the Phoenicians. Another lineage common in the ancestral Arab-Jewish gene pool is found among today's Ethiopians and may have reached the Middle East by men who traveled down the Nile. But present-day Ethiopian Jews lack some of the other lineages found in Jewish communities, and overall are more like non-Jewish Ethiopians than other Jewish populations, at least in terms of their Y chromosome lineage pattern http://www.csulb.edu/~kmacd/346genetics.html |
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