NEET 2026
- Exam
- NEET
- Year
- 2026
- Subject
- Zoology
- Chapter
- Principles of Inheritance and Variation
NEET 2026 · Zoology · Principles of Inheritance and Variation
Given below are two statements : Statement I : Down's syndrome is...
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 :
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 :
Options
- AStatement I is incorrect but Statement II is correct
- BBoth Statement I and Statement II are correct
- CBoth Statement I and Statement II are incorrect
- DStatement I is correct but Statement II is incorrect
Correct answer
C. Both Statement I and Statement II are incorrect
Step-by-step solution
Down's syndrome is an autosomal aneuploidy caused by the presence of an additional copy of chromosome number (Trisomy ). Therefore, Statement I is incorrect.
Turner's syndrome is a sex chromosomal aneuploidy caused by the absence of one of the X-chromosomes, resulting in a karyotype of with . Therefore, Statement II is also incorrect.
Both Statement I and Statement II are incorrect.
Answer: Both Statement I and Statement II are incorrect
Turner's syndrome is a sex chromosomal aneuploidy caused by the absence of one of the X-chromosomes, resulting in a karyotype of with . Therefore, Statement II is also incorrect.
Both Statement I and Statement II are incorrect.
Answer: Both Statement I and Statement II are incorrect