Do you believe that there's a gay gene? If not, what's the cause?

Scientists have looked for the gene for decades and are yet to find one.

Some believe it's all environmental factors or hormonal issues (gay frogs) related to birth control, plastics and other factors in the water supply etc.

There's more gay people as a proportion of the population than there's ever been. Coincidence?

What do you think?

I believe there's a gay gene
I believe its social conditioning
Hormonal causes
Other
Select gender and age to cast your vote:
Do you believe that there's a gay gene? If not, what's the cause?
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