Ah, I see now. But surely gene selection isn't that easy, or truly and directly in my hands. For example my current genes would be the result then of my actions in a past life I can't remember, and what I will do in this life will determine my genes in a future life, cause and effect I understand, but in such a system I didn't directly choose my genes knowingly for this life, and if a person is homosexual because of past life karma, then they wont have consciously selected their genes either, or would they?
And what past action say leads to a genetic inclination towards homosexuality (if it is indeed gene based?)