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RE-NEET2026Botany-Genetics

RE-NEET 2026 Botany Chromosomal Disorders Assertion Reason Question

Type: Assertion Reason-conceptual-Medium-Class 12

Given below are two statements: Statement I: Down's syndrome is caused by the absence of one of the X⁻chromosomes. Statement II: Turner's syndrome is caused by the presence of an additional copy of the chromosomes. In the light of the above statements, choose the correct answer from the options given below:

A

Both Statement I and Statement II are incorrect

B

Statement I is correct but Statement II is incorrect

C

Statement I is incorrect but Statement II is correct

D

Both Statement I and Statement II are correct

Correct Answer

Option A

Detailed Explanation

Both statements are incorrect. Down's syndrome is due to an extra chromosome 21, and Turner's syndrome is due to a missing X chromosome.

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