|QUOTE (K^2 @ Mar 25 2006, 23:35)|
| Humans choose to be tied to a single mate. Male needs to make sure that his female is only insemenated by him. In modern society that means that every male expects his female to be faithful to him. Since we have a 1:1 ratio, this means that the only way to have that is if each male is pared of with one female. |
I was thinking about this, and it is true, to a certain extent.
Because it's better if your brother has 15 children than both of you having 5 each in terms of survival of your specific genes since there is very little difference between the genes you have and the genes of your brother.
And we have very close to a 1:1 ratio, but there are more men able to reproduce than women, thanks to menopause and longer life spans.
Extending the point of your brother vs. yourself. Your genes would also get passed on if your father got more tail. Or your cousin. Or any other human being. Or any humanoid. Or any mammal. Or any living being.
oh... I wished to add this:
|QUOTE (wikipedia "animal sexuality")|
| Animal sexual behavior takes many different forms, even within the same species. Researchers have observed monogamy, promiscuity, sex between species, sexual arousal from objects or places, rape, copulation with dead animals, homosexual, heterosexual and bisexual sexual behaviour, and situational sexual behaviour and a range of other practices among animals other than humans. Related studies have noted diversity in sexed bodies and gendered behaviour, such as intersex and transgender animals.|
The study of animal sexuality (and primate sexuality especially) is a rapidly developing field. It used to be believed that only humans and a handful of species performed sexual acts other than for procreation, and that animals' sexuality was instinctive and a simple response to the "right" stimulation (sight, scent). Current understanding is that many species believed monogamous have now been proven to be promiscuous or opportunistic in nature, a wide range of species appear to both masturbate and to use objects as tools to help them do so, in many species animals try to give and get sexual stimulation with others where procreation is not the aim, and homosexual behavior has now been observed among 1,500 species, and in 500 of those it is well documented.