"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."

http://www.csulb.edu/~kmacd/346genetics.html

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Nurse Roberts: She googled your ass.

Dr. Kelso: Don't you use your street lingo on me!