Well, given that Arabs are sons of Abraham by Ishmael, & Jews are sons of Abraham by Isaac (the 2 men were half-brothers), this does stand to reason. Ought to smack my head for not thinking of this. Of course Arabs & Jews are related. But they are still separate, albeit related, ethnic groups. So yes, you're partly right, I'll grant the point. But I stand by what I said re: the Levites, the Cohanim, & Jews generally, & their various DNA markers. The Samaritans are obvious. They are mixed, half Israelite & half Assyrian, mostly.