Well, actually at the U of Washington scientists have been working on ways to make gay sheep straight. Obvi gay male sheep are worthless for producing more sheep and farmers get jipped when they buy male sheep who turn out gay.
The scientists actually ahve had some success but activists, including Martina Natarolova (i botched the sp) are saying that it should be stopped as it is anti-homosexual. They probably dont like that fact that the findings suggest taht in the future gay people could indisputedly have the choice whether or not to be straight or gay.
I believe i posted the link awhile ago, I will look for it.