Falling in line w/ your topic. I was watching a documentary on BBCAmerica. John Barrows was interested to know whether it was bioligical( I hope I spelled that right), or 'a choice'. The researchers came to the conclusion: That due to low test. levels @ a certain fetal developmental stage. A homosexual males brain develops much the same as a womans( merely bioligically speaking). Also, that each male sibling born makes this occurance 30% more likely for the following male born. I would assume this research could easily be found thru BBC's website?