Question

Genetic identity of a human male is determined by :

• A. autosome
• B. nucleolus
• C. sex-chromosome
• D. cell organelles

Answer 1

Answer: (C)

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.