What determines the sex of a child?

Question

Question

This question was previously asked in

Maha TAIT Official Paper (Held On 12 Dec 2017 Shift 2)

Answer 1

Explanation:

The sex of a child is determined by the chromosomes of the father
•The chromosomes of the sperm, coming from the father, determine the sex
of the child.
If the sperm containing the X chromosome fertilizes the ovum, then a female child is born and if the sperm containing the Y chromosome fertilizes the ovum, then a male child is born.
Rh factor is present in the blood.
The blood does not form part of the reproductive system, it is the same in both males and females. It carries DNA which is the genetic code.
The only difference comes through the sex chromosomes, i.e. X and Y.