4.Principles of Inheritance and Variation
easy

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

Option A
Option B
Option C
Option D

Solution

$50$ per cent of sperms carry the $X$-chromosome while the other $50$ percent carry the $Y$. After fusion of the male and female gametes the zygote would carry either $XX$ or $YY$ depending on whether the sperm carrying $\mathrm{X}$ or $Y$ fertilised the ovum. Sex of the baby is determined by the father and not by the mother.

Butunfortunatelyin our society women are blamed for producing female children and have been excluded and ill-treated because of thismisconception.

Standard 12
Biology

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