Question

how many pairs of chromosomes are present in human beings? out of these how many sex chromosomes? how many types of sex chromosomes are found in human beings?"The sex of a newborn child is a matter of chance and none of the parents may be considered responsible for it" .

Answer 1

23 pair
1 pair
father is responsible

Answer 2

23 pairs of chromosomes are there.1 pair is of sex chromosome.
in males the sec chromosome consist of XY
and female there are XX so sxientifically the sex of baby is depend on the chromosome of male.