NEET Questions & Answers
Q001
Problem
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:
(1) Both Statement I and Statement II are incorrect
(2) Statement I is correct but Statement II is incorrect
(3) Statement I is incorrect but Statement II is correct
(4) Both Statement I and Statement II are correct
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:
(1) Both Statement I and Statement II are incorrect
(2) Statement I is correct but Statement II is incorrect
(3) Statement I is incorrect but Statement II is correct
(4) Both Statement I and Statement II are correct
Solution
Step 1: Analyze Statement I. Down's syndrome is not caused by the absence of an X-chromosome. It is caused by an extra copy of chromosome 21.
Step 2: Analyze Statement II. Turner's syndrome is caused by the absence of an X-chromosome, not by the presence of an additional chromosome.
Final Answer: (1) Both Statement I and Statement II are incorrect