You'd think someone would have thought of D.N.A. testing by now. Wait, I think it may not be D.N.A. It is something that is passed down on the maternal side of the family. Ugh, I can't remember the name. Docs, help???? I'm sure you'll know what I'm talking about. I know they tested the remains of Jesse James for that same 'maternal pattern' thing. I'm sure they could do it for Booth.