Human being contain 23 pairs of chromosomes, human males having 22 pairs of autosomes and containone or two types of sex chromosome. i. e. either X or Y. Whereas human females have 22 pairs of autosomes and only one type of sex chromosome i.e, the X sex chromosome. Hence the sex of an individual is determined by the type of male gamete ( X or Y) fuses with female sex gamete (X). If the fertilizing sperm contains sex chromosome X then baby girl will be born and if the fertilizing sper contains Y sex chromosome the baby boy will be born. Hence it is wrong and incorrect to blame a woman for giving birth to daughters.