NEET 2024 — Biology solution

NEET2024Biology

Match List I with List II:

List I	List II
A. Down's syndrome	I. 11th chromosome
B. $α$ -Thalassemia	II. 'X' chromosome
C. $β$ -Thalassemia	III. 21st chromosome
D. Klinefelter's syndrome	IV. 16th chromosome

Choose the correct answer from the options given below:

A
A-III, B-IV, C-I, D-II
B
A-IV, B-I, C-II, D-III
C
A-I, B-II, C-III, D-IV
D
A-II, B-III, C-IV, D-I

Solution

Down's syndrome is caused by trisomy of chromosome 21 (A-III). $α$ -Thalassemia involves the HBA genes located on chromosome 16 (B-IV). $β$ -Thalassemia involves the HBB gene located on chromosome 11 (C-I). Klinefelter's syndrome (47, XXY) involves an extra X chromosome (D-II).

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