Arabs and Jews share much of the same Semitic history and culture, but the DNA is taking different paths. Suddenly Jews don’t look so Semitic anymore after centuries in the West and elsewhere. Persians, who speak an Indo-European language, look more Semitic than ever. Races and languages parallel each other with imperfect lines, multiplying and dividing all along the way. Certainly Jews and Arabs aren’t sharing many body fluids these days, though they’re certainly spilling a bit.