Question

how girl is born and how boy is born​

Answer 1

Explanation:

Girls are born when there is xx chromosome in the embryo's cells while boys are born when there is by chromosome in the embryo in the initial stages

Answer 2

Explanation:

The sex of a baby is determined by the type of the sex chromosome present in the fertilized egg.

• If sperm carrying X chromosome fertilising an egg cell which carries X chromosome, then the zygote formed will have combination of xx chromosome due to the child born will be a girl.
• If sperm carrying Y chromosome fertilizers in a egg Cell which carries X chromosome, then the zygote formed will have xy combination of sex chromosomes which means that the child born is a boy.