Posted: Mar 23, 2011 5:37 pm
The upsuck hypothesis doesn't work.
The semen has to be there before the orgasm (in the female) but if the semen is already there the male is done and there will not be any more stimulation for the female--which she will need in order to have an orgasm.
It could work if simultaneous orgasm was the norm.
It's really too bad too, because if upsuck increased the facilitation of fertilization, easier orgasm during coitus would be present in females.
Antlers could have been sex linked at the outset, just as calico and tortoiseshell color is in cats.
The semen has to be there before the orgasm (in the female) but if the semen is already there the male is done and there will not be any more stimulation for the female--which she will need in order to have an orgasm.
It could work if simultaneous orgasm was the norm.
It's really too bad too, because if upsuck increased the facilitation of fertilization, easier orgasm during coitus would be present in females.
Antlers could have been sex linked at the outset, just as calico and tortoiseshell color is in cats.