I ask because Identical Twins are formed from the same egg & sperm and have IDENTICAL DNA. Any case of a homosexual identical twin with a hetrosexual twin would discredit a "gay gene" theory.
And I used google also to make sure I had the correct word.
Did I mention that I have a steel plate in my head? I don't remember. Thinking about it on the couch, identical twins with one gay, one hetero not a good argument for genetic differences. Unless (weakly) unless these twins would be a great way to compare/determine a minor minor genetic difference. Aw geez, even I don't believe that. Note to self - start drinking heavily.