[Jessica]

Well this is what my doctor told me - inorder to maximise the chances of conceiving, one must have intercourse every alternate day from the tenth day of the stating of the menstruation cycle. It is true that Y(boy) chromosome are less in number but are faster and survive for lesser time. On the other hand the x(girl) chromosomes are more but are slower and much more in number. However there is no way to predict the gender of the child in advance and so one must not get into the details of all this and just have a healthy relationship with the partner. Best of luck.