| Column I | Column II | ||
| A. | Klinefelter syndrome | 1. | Mutation in autosomal gene |
| B. | Thalassaemia | 2. | Mutation in sex chromosome-linked gene |
| C. | Down syndrome | 3. | Trisomy of autosome |
| D. | Colour blindness | 4. | Trisomy of sex chromosome |
A) A-1 B-2 C-3 D-4
B) A-2 B-3 C-4 D-1
C) A-3 B-4 C-1 D-2
D) A-4 B-1 C-3 D-2
Correct Answer: D
Solution :
| Column I | Column II | |
| A. Klinefelters syndrome | 4. | Trisomy of sex chromosome (44 + XXY) |
| B. Thalassaemia | 1. | Mutation in autosomal gene |
| C. Downs syndrome | 3. | Trisomy of autosome (extra 21 chromosome) |
| D. Colour blindness | 2. | Mutation in sex chromosome linked gene |
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