Problem
Detail both the "inversion" hypothesis of Levay and the notion that there might be a 'gay gene'. You should detail the evidence in support of the 'gay brain' hypothesis. (Including the rat studies) What is the human evidence Levay sees as supporting this view? Also how does Hamer articulate the idea that there is a genetic influence on sexual orientation and that this gene is located on the X chromosome? And in detail, explain how any number of aspects of Levay/Hamer's experiments and the methodological assumptions might be questioned.