Forget same-sex marriage
Gay marriage. Don’t go there. Wait for science to explain a few things, stuff like why mom and pop gays can never have kids.
How and why gays developed sexual organs over what period of time?
How did gays reproduce before their organs were ready for a sterile recital?
All of these are questions for hard science; the soft science of chromosomes is not relevant.
Forget same-sex marriage. You don’t want to go there. It’s enough already that gays survive without the help of evolution or biology.
Be brave comrades.