Iguana,
There are more views on the subject further down, and more views on the internet, too:
http://www.anusha.com/rapeevol.htm
And, I would ask you to take some of my accounts in hand. The sort of behaviour I have heard, takes place over an entire area, a few hundred square miles, in bars upwardly mobile people visit.
It's a bit like the Deep South was, or is, in Texas, or at least the depiction giving in the media. It's very insular genetically and very insular socially. It's a hard place to get out of, educationally the people are below average and the women are of lower standing. Very few people want to go in and very few get out. The people who do go in are low acheivers on the scale of life, just getting on the first rung and want to go to a place where they will be of relatively high status. The people who get out never return. It results in a spiral of low acheivement and the denizens develop a peculiar form of arrogance combined with a lot of low esteem, in a sort of weird combination. They convince themselves that they are better, cos no-one goes to see them!
Another thing that happens, is that low acheiving men impregnate women with careers, and force them to give them up ,and look after their low acheiving offspring. High acheiving men are attracted to low acheiving women, as they, curiously, have high status, and give birth to low acheiving offspring. Everything tends towards a below the average!
I admit, they haven't found a rape gene yet, and as other people have said, it's probably a combination of traits, linked to power and control and so on.
I'm willing to bet they all come together, a lot ,in certain men AND women in this area, and the culture intensifies it. I think it happens in other rundown areas in the western and eastern world too, but they are not spread out over a wide area and with a strong cultural identity and reputation. More mobility would be the answer, I think, combined wih cultural change and enlightenment.
We'll find out, hopefully,what genes do what, and this area of research will not be closed off or pooh-poohed.
I don't think that it should result in eugenics or letting people off, cos, they are genetically pre-disposed. It should just result in enlightenment and control. I dread to think it would result in letting people off, cos there's enough people playing the game, educationally, by claiming attention deficit order and so on.
Iguana, maybe there isn;t a rape gene, or a collection of rape orientated genes. But you don't know for sure yet.
Also, I would say, in the Star Trek world, they know a hell of a lot more about this than we do and what makes us tick. But they are proud of their traits, not ashamed.