Q. Trisomy of which chromosome is involved in Down’s syndrome?
A) 15^(th)
B) 21^(st)
C) 20^(th)
D) 19^(th)
Explanation
The correct answer is Option A: 15^(th).
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.