Q. 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) Statement I is incorrect but Statement II is correct
B) Both Statement I and Statement II are correct
C) Both Statement I and Statement II are incorrect
D) Statement I is correct but Statement II is incorrect
Explanation
[Solution from source] Down's syndrome is trisomy 21 and Turner's syndrome is 45, XO; the statements swap the causes, so both are incorrect. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.