Question

Explain with the help of a flow chart that in human beings the father is responsible for the sex (male or female) of the child.

Answer 1

Male humans possess 44 + XY chromosomes, while females possess 44 + XX chromosomes. Male and female contribute half of the chromosomes during zygote development; the male can contribute either 22 + X or 22 + Y because he is heterozygous, while the female contributes 22 + X because she is homozygous. The male’s contribution determines the child’s sex.