abouteve - that thing about hormones you said might actually make sense.
If you think about primitive humans as you would a pride of lions or a group of chimpanzees. If the biological father is in the house, a daughter's periods might be likely to start later because she is related to him and so is not needed for reproduction as that would be incest and not healthy. If the biological father is absent, and no other man is present in the house, or a man is present who is not genetically related to her, then nature might bring on her menarche earlier in order for her to be available for reproduction with the alpha male who is not related to her or for her to attract a new alpha male.
Either of these might be constructive towards the cohesion and success of the group. I.e. when we were cavepeople, it was necessary to have males around for reproduction but also to secure food and fight enemies, predators, etc.. So it is in nature's interest for a female to be available for reproduction in order to attract strong males, unless there is already an alpha male in the group who she is genetically related to. Of course, in our culture and society, it would not be acceptable for a daughter to sleep with her mother's boyfriend (her step-father) so what nature might want to happen would be different to what we would find culturally acceptable.
But regardless of the above, as I said in my previous post, and as we can see from many of the posts here, there must be loads of emotional and psychological factors that could mitigate against any of the ways that nature might try to manipulate us.
I am a single mother of a daughter whose father does not wish to have contact. This is why I am interested in this. I grew up with my father around, possibly a little emotionally distant due to my mother dying in my late teens and my father having difficulty coming to terms with this. I was 20 when I first did the deed and, generally, a late developer.
I have also read that daughters with absent fathers tend to either be underachievers or overachievers rather than average. Underachievers because, in some cases, the mother has to work long hours to support her children and may not be around to encourage a child with their homework. Or the mother herself may have always had low aspirations. Overachievers because the daughter may believe that, if only she could make a success of herself, the absent father might realise the error of his ways and take an interest in his child.
But, again, I am sure there are many more exceptions than that one that is required to prove the rule. The research that is done into these kind of things often seems to be funded by right-wing religious organisations in the States and would seem to be a little bit suspect.