MCQ Practice

Assertion (A) In humans, female sex is determined by XX-chromosomes. Reason (R) Male sex is determined by XY-chromosomes.

A

Both A and R are true and R is the correct explanation of A

B

Both A and R are true, but R is not the correct explanation of A

C

A is true, but R is false

D

A is false, but R is true

Correct Answer: B