Question

In our society a woman is often blamed for not bearing male child. Do you think it is right? Justify.

Answer 1

It is wrong because sex of the child is determined by gametes formed by man who is heterogametic for sex chromosomes (XY) whereas woman is homogametic (XX). Male produce two type of games t(50% with X chromosome and 50% it Y Chromosome). On the other hand, female produced gametes carrying X chromosome only. If the ovum of a female fertilizes with sperm having Y chromosome, the zygote develops into a male (XY) and if fertilises sperm having X chromosome, the zygote develops into a female (XX).