Q. 14

Explain why it is

Answer :

The chromosome pattern in the human female is XX and that in the male is XY. Therefore, all the haploid gametes produced by the female (ova) have the chromosome X whereas in the male gametes (sperms) the sex chromosome could be either X or Y (50% of each). After fusion of the male and female gametes the zygote would carry either XX or XY depending on which of the sperm ( X or Y ) fertilised the ovum. The zygote that would have XX would develop into a female baby while XY would develop into a male baby so it is scientifically incorrect to blame the mother for bearing female child.


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