For example, the existence of a "gay gene" has not been proven, but such a gene remains an acknowledged possibility.

If I didn't know better I'd say you had a gay gene in you someplace.

Today, teachers say, biology students are asking different sorts of questions: Is there a gay gene?

Perhaps "gay genes" have some other compensating advantage, like enhancing fertility, when they are carried by women.

Almost immediately afterwards, the gay gene wears off and Peter moves back in with his family.

Reading people talk about gay genes makes me think of people seeing the first home computer and wonder the typewriter reel goes.

"God didn't give me that gay gene of creativity," he says.

This was popularly dubbed as the "gay gene" in the media, causing significant controversy.

Q. Why don't we hear much anymore about a "gay gene"?

Since then, no one has tried to take the "gay gene" any further.