XY system in mammals: Sex is determined by presence of Y. "Female" is the ... to
the theory that the genetic mechanism that determines a fetus to develop into a ...
Girl or Boy Baby Gender - At conception, gender is determined by chromosome
characteristics that dictates whether the baby will be a boy or a girl.
Apr 5, 2012 ... What we can say is that dad's sperm determines whether a baby will be a boy or
a girl. About half of his sperm will make a boy and half a girl.
Experts explain whether diet, timing, and changing body chemistry can really
help parents-to-be determine the sex of their baby.
Nov 5, 2015 ... Most parents don't find out their baby's gender until the 20-week scan, .... you
could possibly use it to determine the sex of your unborn child.
Boy or Girl: How Genetics Determine Your Baby's Gender. The process by which
your baby becomes a boy or a girl, according to what's written in his or her ...
Sperm dictates the sex of the fertilized egg. However, a lot of mutual factors
contribute to gender, including as the egg's receptivity to the male's
Dec 14, 2008 ... Men determine the sex of a baby depending on whether their sperm is carrying
an X or Y chromosome. An X chromosome combines with the ...
The sex of a baby is determined by two sex chromosomes inherited from both the
genetic parents. A baby will normally inherit one sex chromosome from the ...