Since I'm on a Dumb Vinci Code kick today, check out this amusing article about the genetics of Jesus! Check it:
In humans, females package some of their DNA in two matched X chromosomes, males in a single X and Y. So if you're a male, there's only one way you could have gotten your Y chromosome, and that's from your biological father. Where would Jesus have gotten his Y?
Where indeed. Perhaps Jesus Christ was an XX male? In other words, he was a clone of Mary that was miraculously possessed of an SRY.