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: Trisomy 21 Explained. Trisomy 21, the presence of an extra copy of chromosome 21, results in Down syndrome, a genetic condition.
Step 2: Down Syndrome Manifestations. Characteristic signs include: - A furrowed tongue (i) - A distinct palm crease (ii). Developmental delays and other attributes may also be present.