CapsLock said:In it studies are cited (without reference unfortuneately) that seem conclusive (enough) to me. In regards to twins I'll post the relevant section
Only because I don't think you know what they're really talking about. It's very easy to lie with statistics, numbers and some alien nomenclature to people.
As you know the X and Y Chromosones are differential and, subsequently, there is little recombination between them in contemporary human genetics. Yet, evolutionary genetics has shown that this wasn't allways the case and that there are still two regions on the Y chromosone which are ananlogous to that on the X covering ~2.5 and 1/2million bps where recombination of information is possible. XQ28 is one of these, which is located IIRC on the tips of the Y. It's called a pseudoautosomal region (PAR) by the communit for obvious reasons. That being said, lets actually look at this:
The infamous trial by Hamer which you cite was a borderline joke which was not ony political (in the homosexual communities desire for biological justification) but down right immoral. His initia paper looked great and the liberal media jumped on the bandwagon, just like you.
Yet, Scientific American soon stated that he had "been charged with research improprieties and is now under investigation by the Federal Office of Research Integrity." Which is what happens when you exclud “pairs of brothers whose genetic makeup contradicted his finding.†Big Boo-Boo.
And then the shit really hit the fan when the scientific community tried to replicate the experiment. Science then published the following, much broader and (actually scientific) trial by Rice and Ebers which you can convienently read here - which totally overshadowed Hamer's horrific trial. Scientific American then stated that researchers "have yet to be fully replicated by another researcher.†Yeah, well, no shit and here's why.
As I stated before, it's a PAR, each of which are composed of several overlapping genes. He didn't isolate a gene and it's effect, nor did he state a mechanism behind it. And he got away with this because he restricted his pool to a small percentage of the gay population, he didn't study lesbians or any bisexuals, and totally avoided anyone whose heterosexual and relate.
I need to do some work now, but I'll reply on the actual genes in the PAR later on.