Answer:

1. X chromosome

2.Y chromosome

3.Two X chromosome

4.biologically male individuals have one X and one Y chromosome (XY) while those who are biologically female have two X chromosomes.

5.Almost everyone has around a 50% chance of having a boy and a 50% chance of having a girl. 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. The sex of the baby depends on which sperm gets to the egg first.