If Jesus had kids, would they be half-God?

Short answer: No.

Middlesized answer: God ain't in the genes (or jeans).

Longish answer: God is spirit, or more properly, the Ground of Being, that which sustains all of creation and the Universe. That is rather too large a concept to cram into the tightly-wound spirals of human DNA. They have a big enough job, just guiding and regulating the growth of the physical organism.

Even longer answer: Christianity teaches that Jesus Christ is both God and man. Fully God, and fully man. If you don't believe this, you're not a Christian.

What that means, from one perspective, is that Jesus is the conduit and connection between us, who are caught in time and space, and the infinite glory of God, who is beyond, before, and beneath all we perceive and imagine. If Jesus were not God, he would not be able to bridge that gap; equally, if he were not man, we would be up the proverbial creek, because what or who would there be to connect with?

In the Gospels, Jesus says a couple of times: "You who see me, see the Father" -- he unequivocably identifies himself with God. Yet he obviously and painfully suffers the uncertainties of human life, and also suffers a human death.

Yeshua ha-Nazri (Jesus the Nazarene) was fully man -- he had a real physical body, with all its component parts in working order, and ate and eliminated (no jokes about the Holy Outhouse, please, but he did use one when he was on earth) just like we do.

And if his mission had (which it did not) included being married and having children, they would have been quite ordinary Jews of their day. They would have had a really impressive and scary dad -- can you imagine somone who really knows exactly what you have been up to? (He would have been pretty outstandingly loving, too -- and minded to forgive and create interesting learning experiences for his kids. Come to think of it -- we ARE his kids. :)

Likewise, presuming the Shroud of Turin is the actual burial shroud of Jesus (It does not matter to the Faith either way -- but I will leave that discussion for later), say in 50 years or so, when science has gotten to the point of being able to clone a person from individual cells (the technology will probably get there, but whether we SHOULD do it or not is another story).

So they go at the Shroud of Turin, and find dried-out human cells with a full compliment of DNA that is not completely scrambled. They take them off, do mystic passes with their technology (all sufficiently advanced technology is indistinguishable from magic), stuff the result in a Uterine Replicator (artificial womb), and 9-10 months later -- POOF! -- they have a kid.

So what have they got? Assuming that the DNA they found was actually from Jesus, and not from anyone who has handled the Shroud since, they have an entirely normal Jewish boy, who would have fit right in with any crowd of kids running the streets in 1st Century Judea.

Normal human child -- body & soul. Not god. No supernormal powers. No choirs of angels. No three kings of Orient.

You can bet that the apocalytpic wackos would be all over him, touting him as the "Second Coming of Christ", but there is no rational reason to think that. Christ came once, to save us, and there will be no doubt in anybody's itty-bitty head when He comes again.

Back to the original question -- which was prompted by reading "The Davinci Code". The "Code" is a re-write of the book "Holy Blood, Holy Grail" published in 1982. Rather better that the original, since it has a plot and some action, BTW.

There exists exactly NO evidence, from Apostolic times to 1982, that Jesus was married. And none since, either.

There exists exactly NO evidence that Jesus of Nazareth was anywhere on earth after 30 A.D.

The whole incident goes to illustrate that when people don't have anything real to believe in, they will believe absolutely anything -- no matter how far-fetched.