Question

A person with trisomy of the 21^st chromosome shows:
(i) Furrowed tongue
(ii) Characteristic palm crease
(iii) Rudimentary ovaries
(iv) Gynaecomastia
Select the correct option from the choices given below:

• A. (ii) and (iv)
• B. (i), (ii), and (iv)
• C. (ii) and (iii)
• D. (i) and (ii)

Hint:

Down syndrome is caused by the presence of an extra copy of chromosome 21, leading to distinct physical and cognitive traits.

Answer 1

The Correct Option is D

Step 1: Understanding the condition of trisomy 21. Trisomy of chromosome 21 leads to Down syndrome, a genetic disorder caused by an extra copy of chromosome 21.
Step 2: Symptoms of Down syndrome. Key features include: - Furrowed tongue (i) - Characteristic palm crease (ii) Other traits, such as developmental delays, may also occur.