Let's assume that the Gay Activists are correct, that homosexuality is caused by a "gay gene." Also, suppose that genetic technology advances to the point whereby a physician is able - like they are today with certain prenatal abnormalities - to tell prospective parents that their unborn child is destined to be: homosexual.
What would the pro-choice crowd do with this? Hmmmm?
Further, there is now gene-changing technology for many genetic illnesses. If homosexuality is genetic, there may one day be a cure.