Wolfgang Rolke wrote:
> d) hlau wrote:
> > ["...When couples have sex more often,
> > fertilization is more likely to occur early in the menstrual cycle,
> > which apparently increases the odds of male conception.
> > Some observers believe this conjecture explains why the percentage
> > of baby boys has usually increased after major wars."]
>
> Now this is my favorite. I seem to have known this almost forever,
> but I have never been sure whether or not it is really true or whether
> it is an urban legend. Are there any studies that show a relationship
> between frequency of intercourse and the sex of the baby? Now here is a
> data set that my students could get excited about! (Pun intended)
This too may be an myth, but I have been told that sperm with
Y chromosomes are more mobile and shorter lived than those with X
chromosomes. Hence, the greater the frequency of intercourse,
the more likely some of those more mobile Y chromosome sperm
will be lurking when the egg arrives.
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