You could argue that it is in males, as many say that men are biologically/genetically configured to 'spread the seed' around as much as possible. Hence why marriage became so important. It acted as a civilizing influence on men while at the same time they could rest assured that the children his wife was having were his.
Funny, when people argue that poor 'homosexuals' are born that way and can't help it, you could counter argue that men are born promiscuous but have repressed said promiscouity for the benefit of civilization (but of course, many fail at repressing it but then again they aren't out for special rights on it either).