Question

A woman with $47$ chromosomes due to presence of additional $21$ chromosome is characterised by.

• A. Super femaleness
• B. Turner's syndrome
• C. Down's syndrome
• D. Triploidy

Answer 1

Answer: (C)

Down's syndrome

Down syndrome also known as trisomy 21, is a genetic disorder caused by the presence of all or part of the third copy of chromosome 21.

Hence, a person suffering from it will have 47 chromosomes instead of normal 46.

So, the correct answer is 'Down's syndrome'.