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  4. Genetic identity of a human male is determined by :

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Q. Genetic identity of a human male is determined by :

Haryana PMTHaryana PMT 2000

Solution:

Typically in mammals, the gender of an organism is determined by the sex chromosomes. The sex chromosomes of humans are $X$ and $Y$ chromosomes.
Females have two $X$ chromosomes, while males have both $X$ and $Y$ chromosomes. So, a human male can be identified by the presence of the $Y$ chromosome, which is a type of sex chromosome.