For Those of You With Older Brothers.....

1) The brother factor is interesting, but I feel like these guys haven't done nearly enough work yet. They found a correlation between brothers and homosexuality -- good for them. Now, tell me the mechanism. Lazy Canadians.

2) It's interesting that they fall in between the choice and genetics camps. If homsexuality was caused not by genetics but by a gestational event, will there be more of a tendency to think of homosexuality as a deformity or birth-defect than if it was straight-up genetics? If they do find a gestational mechanism that causes homosexuality, will they start prescribing medication to avoid its development?