Match List I with List II:

- AA-II, B-III, C-IV, D-I
- BA-III, B-IV, C-I, D-II
- CA-IV, B-I, C-II, D-III
- DA-I, B-II, C-III, D-IV
Solution & Step-by-step Explanation
Down's syndrome: Trisomy of 21. -Thalassemia: Controlled by linked genes on chromosome 16. -Thalassemia: Controlled by a single gene on chromosome 11.Klinefelter's syndrome: Caused by presence of an extra X chromosome ().Correct Match: A-III, B-IV, C-I, D-II.