By the way, scientists all agree there is no such thing as race. There is no physical way of distinguishing peopel of different "races". All you can say is that people who live near each other look like each other.
The genetic variation in the human race is in fact tiny - about a third that of chimps. The conclusion is that during some near-extiction event humans were down to maybe only a hundred individuals. Adam and Eve may not have been so wrong after all.
Both the Arabs and Jews claim to be 100% descended from Abraham (by sons from different wives). This may in fact be true. Rows between relatives are often the most nasty.
