Boys are XY, girls are YY.. only men can produce the X chromosomes.. Unhealthy men have a hard time producing the X chromosomes.. Men who have a lot of girls and 1 or no boys are not healthy reproductively.. if you want a boy, find what you should eat to be reproductively healthy.. if you want a girl, find ways to not be reproductively healthy..
If ang couple dli mkaanak ug laki, sala nah sa lalaki.. dili sa babae..