That reminds me of this politician here...
http://www.nytimes.com/2012/08/20/us/politics/todd-akin-provokes-ire-with-legitimate-rape-comment.html
I dont really see the connection but ok ..
This guy look like an asshole.
What is said is more that he explain this repression because of lack of food resources during ice age.
But it stay very speculative.
If anything the concept of wedding and marriage come more from religion than science.
Rape is like ego- libido = narcissism, and carry no reproductive value.
There is the section "selfish genes" that talk about this in the badcock ( lol The name ) paper.
Freud is not perfect, but he is into the few ones who dare to see intelligence in "instinct" and evolutionary drive.
I like Edelman more but he is harder to grasp, and he still follow on Freud on many things.