(N/A) All human beings have $23$ pairs of chromosomes. Human males have $22$ pairs of autosomes and one pair of sex chromosomes,which are $XY$. Human females have $22$ pairs of autosomes and one pair of sex chromosomes,which are $XX$. The sex of an individual is determined by the type of male gamete ($X$ or $Y$) that fuses with the $X$ chromosome of the female egg. If the fertilizing sperm carries an $X$ chromosome,the resulting zygote will be $XX$ (a girl). If the fertilizing sperm carries a $Y$ chromosome,the resulting zygote will be $XY$ (a boy). Therefore,the sex of the child is determined by the father's genetic contribution,and it is scientifically incorrect to blame a woman for the gender of the child.