1. Who cares whether or not they found the gene yet?(answer: stupid people.)<quoted text>
If what you say is true, why hasn't modern science been able to identify the genetic mutation responsible for homosexuality? And what will happen when and if they do? Will folks like you permit potential parents who carry the homosexual gene to abort fetuses that will become homosexuals, effectively solving the issue?
2. It's not a "problem" to be solved. It's a natural variation of birth.(It's only a problem for stupid people.)
3. If abortion is legal, then parents can do whatever they want for any reason or no reason, as far as I know. Is that moral? That's something they'll have to wrestle with.