NEET Biology question
Match column I with column II and select the correct option from the given codes.
| Column I | Column II | |---|---| | A. Autosomal recessive trait | (i) Down's syndrome or mongolism | | B. Sex-linked recessive | (ii) Phenylketonuria | | C. Metabolic error linked to autosomal recessive trait | (iii) Haemophilia | | D. Additional 21st chromosome | (iv) Sickle-cell anaemia |
Answer: (C)
Solution
Sickle-cell anaemia (a structural haemoglobin defect) best fits "autosomal recessive trait" (A), generically — matching (iv). Haemophilia is the classic sex-linked recessive disorder (B) — matching (iii). Phenylketonuria is specifically the classic
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