I personally don't think Sasuke would fall for any of the girls we've met so far. All the ones he's known for a while and grown up with are too clingy and full of idol worship. While he would like the constant attention, he'd tire of it. I think the first girl to challenge him (with a reason BESIDES the fact he's an Uchiha) and either tie or beat him would earn his respect. I think he needs someone to argue with him, otherwise he'd get bored.

With the genetics discussion, it makes me laugh. I personally think the Uchiha trait would have to be recessive, otherwise it would be highly spread around. Perhaps it's a double recessive trait? The whole of Konoha could be carriers for one of the two traits. On the otherhand, the theory of codominance or incomplete dominance would be funny. People walking around with three comma-ish shapes or just red eyes would be weird to see! But again, I must agree with the theory that "it's just an anime".