What is the main difference between sperms and eggs of humans? Write the importance of this different.

The main difference between sperms and eggs of humans is as follows:

A sperm or a male gamete has XY chromosomes i.e. half of them are of a male and other half are of female i.e. Y chromosomes and an egg or female gamete has XX chromosomes.

1. If a sperm carrying X chromosome from male gets combined with the X chromosome from female, then the combination will be XX and child will be a baby girl.

2. If a sperm carrying Y chromosome from male gets combined with the X chromosome from female, then the combination will be XY, and the child will be a baby boy.