the hammer of homosexuality

[drfuzzy]

Sorry I'm late to the post.  The OP seems to state, in a nutshell, that when a genetic predisposition toward homosexuality is confirmed, the Xtians will have to accept gay marriage and homosexuals in their congregation.  

We can only hope.  But we know how resistant to change they are.

And yes, I think the day is coming. Physiological differences (not caused by lifestyle, drug use, etc.,) have already been noted.  And why is it that they ignore the fact that there is evidence of homosexual behavior throughout nature?

Yes, sooner or later, science will tell the xtians that here is another thing they're not allowed to hate.  I wonder what they will choose after that?  Oh . . . silly me . . . atheists!!!                  

Agreed. I find the pheromone experiments fairly clear-cut. 

A new study published this month by Wen Zhou of the Chinese Academy of Sciences found a connection between a person’s self-identified sexual orientation and their ability to react to different pheromones. Specifically, participants with an orientation to men (straight women and gay men) responded to male pheromones but not female pheromones.

The experiment exposed participants to either androstadienone (found in male semen and sweat) or estratetraenol (present in female urine) and tested to see how it impacted their gender presentations of a simulated person walking toward them. In all cases, the pheromones were disguised by cloves, so participants were unaware of which pheromone (if any) they were smelling.

Straight women and gay men are aroused by the pheromones of men.

Straight men and gay women are aroused by the pheromones of women.

Bisexuals of both sexes react to both. (And some lesbians showed mixed reactions, as well.)

I don't think there's a gene  for homosexuality, per se,  but I have little doubt we'll find hox-gene pathways in which certain timing and/or duration of gene-switching that occurs during the two major "puberties" we undergo (one isn't really puberty; it happens in the womb late in gestation, but is a lot like puberty in that whole new sets of genes get "switched on" by controller-genes, and it has a huge effect on outcome, depending on when each of the sequence is activated, and for how long) impacts the "Kinsey-scale-settings" of the adult. It's just too complex to fully map, at present, since so many variables are involved.

Oh, thanks Rocket!  Yes, I had read about the pheremone study with great interest, but it's wonderful to get a scientist's (should I use biologist or geneticist?) take on the matter.