A) sex chromosomes of father
B) measurement of sperm
C) measurement of ovum
D) sex chromosomes of mother
Correct Answer: A
Solution :
Sex of offspring is determined at the time of fertilization. In humans, man is heterogametic (having two types of gametes 22 + X and 22 + Y) and responsible for sex determination whereas women is homogametic (having single type of gametes 22 + X).
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