Question

Trisomy of 21^st chromosome leads to a disorder ______.

विकल्प

• Turner’s syndrome

• Klinefelter’s syndrome

• Down’s syndrome

• Sickle cell anaemia

Answer 1

Trisomy of 21^st chromosome leads to a disorder down’s syndrome.

Explanation:

An extra copy of chromosome 21, called trisomy 21, causes Down syndrome.