Quote:
Y sperm and lighter and thus, faster
The proportion of X and Y (male) bearing sperm in semen are equal. But male embryos and fetuses have a higher risk of dying in the womb. Consequently, scientists have been trying to find out why there are more male babies. Dr Smits and his team say their work supports the theory that conception depends on how viscous, or "sticky", the mucus in a woman's cervix is. The stickier it is, the harder it is for any sperm to get through. But Y bearing sperm are lighter(2% smaller), and swim faster. Therefore, if a woman takes longer to get pregnant, it may be that she has thicker than usual mucus. This would mean it is harder for any sperm to get through, so conception takes longer. And, when it does happen, it is more likely to have a boy because of male sperm's swimming abilities. Dr Smits said: "Women whose cervical mucus is relatively viscous would not only have more difficulties conceiving naturally, but also have a higher probability of male offspring if they do get pregnant. "This may explain why there is a higher chance, in general, of having boys."
ok I don't get it:suprise: we suppose to have lot's of ewcm for a boy right? But this here says the more sticky you have the higher a chance to have a boy?
