What deternines the sex of an infant while in the womb?

Question: What deternines the sex of an infant while in the womb?
- Keywords:
  gender,
  infant
Asked by bryan to Bernerd, Joseph, Ken on 14 Jul 2017.
- Joseph Olwendo answered on 14 Jul 2017:
  
  A baby’s genetic sex is determined at the time of conception. When the baby is conceived, a chromosome from the sperm cell, either X or Y, fuses with the X chromosome in the egg cell, determining whether the baby will be genetically female (XX) or male (XY).
- Bernerd Fulanda answered on 14 Jul 2017:
  
  Dear Bryan
  Sex is determined by two chromosomes, X and Y. A female is XX, a male is XY. Since women completely lack the Y choromosome, they always contribute an X chromosome to the baby. The sex is determined by whether the sperm that fertilizes the egg is carrying another X or a Y