You can explain to Mohan, that sex of a child is determined at the time of conception. Women are homogametic, that is, they will produce only one type of ova $$(22 + X)$$. Men are heterogametic. they produce tow types of sperms in equal proportion, androsperms $$(22 +Y)$$ and gynosperms $$(22 + X)$$. It is a matter of chance that the ovum is fertilized by an androsperm or a gynosperm. The same chance can occur two, three, or more times. But for any chance, the wife cannot be blamed. It is the father which is responsible for the sex of the child. Mohan can further be told that women are more important part of the family as well as society. A woman is not only the caretaker of the child. She is also the first and real teacher of the baby. She is responsible for upkeep and care of the family and its aquaintances. Educated and working women not only share social responsiblities but also add to the income of the family.