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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