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4.Principles of Inheritance and Variation
medium
Determination of sex of a child depends upon
A
Nature of sperm
B
Nature of egg
C
Health of father
D
Age of mother
Solution
(a)Sex chromosomes are $X$ and $Y$ and in a child on $X$ has to come from the egg $(XX)$, so it is the nature of sperm $(XY)$ which will determine the sex of the child.
Standard 12
Biology
