This clan business is interesting. Any one has some kind of detailed history of how these clans came to be? Are they created in recent history or there is a possibility much older then that? If people were already mixed in ancient times the probability is that these clans would be pretty mixed too, but only a proper DNA study can determine that. Example there were many misconceptions with some racial separation between Christian and Muslim Lebanese or some kind of Racial purity within Jews. Dna testing seem to have busted these conceptions.