Here's an interesting article about how homosexuality is probably genetic:
And, if it IS genetic, that means it can be tested for before birth. Would a homosexual doctor be forced to perform an abortion, if the mother made it known that she wanted to abort the baby because it was gay?
In a Progressive world, yes, that doctor would be forced to perform that abortion, or close their business.
Or, what if there's a woman who has multiple sexual partners of different races, and gets pregnant. Can she then go to the doctor and request a genetic test to determine the race of the baby? And, if it's not the race she wants, have that baby aborted? Could a doctor refuse to perform the genetic test or abortion, based on moral or religious grounds?
In a Progressive world, no, that doctor would have to do whatever that woman wanted.
Two separate issues.
First, if the Human Genome Project proves that sexual orientation is genetic, the social and cultural bases for discrimination will go out the window, because if orientation is proven to be genetic, people can't help their orientation any more than they can help their skin or eye color. At that point, those who claim homosexuality is a lifestyle choice will have no further basis to make that claim, so they'll appear intellectually silly and stupid.
Abortion is a separate issue. Women should have total control of their own bodies and make their own choices about it, whatever the individual circumstances, regardless of any tangential considerations. Period.