That is hardly correct. A genetic disposition to mate with the opposite sex would be a very strong force for reproduction. In other words: Genes that make you

That is hardly correct. A genetic disposition to mate with the opposite sex would be a very strong force for reproduction. In other words: Genes that make you have sex with the opposite sex would be a huge advantage and so would be selected for. Even insect knows what to do instinctively. I would need VERY strong evidence to accept that it is not gentically encoded.