Not necesarily. If there is a gay gene, it could well be recessive. That would explain why one child in a family ends up gay while the others are straight.
Then we should do our best to keep it recessed.
But I think the Jury is pretty well in on that one. All the best efforts of the best homosexual researchers have failed to produce any evidence of a gay gene.
There could, perhaps, be a gay tendency, as with alcohol, but nothing that the person could not control with the proper training.
Shalom.