All human beings have 23 pairs of chromosomes. Mele have 22 pairs of autosomes and contain one or two types of sex chromosome i.e. X or Y , whereas females have 22 pairs of autosomes and contain only the X sex chromosome. The sex of an individual is determined by the type of the male gamete (X or Y), which fuses with the X chromosome of the female. If the fertilizing sperm is X, then the baby will be a girl and if it is Y, then the baby will be a boy. Hence, it is incorrect to blame a woman for the gender of the child.