Question

Match List-I with List-II:

• A. (A)-(IV), (B)-(II), (C)-(III), (D)-(I)
• B. (A)-(I), (B)-(II), (C)-(III), (D)-(IV)
• C. (A)-(I), (B)-(II), (C)-(IV), (D)-(III)
• D. (A)-(III), (B)-(IV), (C)-(I), (D)-(II)

Hint:

Down syndrome is the most common human trisomy (chromosome 21).

Answer 1

The Correct Option is A

Chromosomal variations:
Nullisomy: 2n
2 (missing one chromosome pair) (A
IV)
Trisomy: 2n+1 (extra chromosome) (B
II)
Monosomy: 2n
1 (missing one chromosome) (C
III)
Tetrasomy: 2n+2 (extra chromosome pair) (D
I)