Principles Of Inheritance And Variation Ques 167
167. Mongoloid idiocy in humans is also known as
(a) Tay Sachs disease
(b) Klinefelter’s syndrome
(c) Down’s Syndrome
(d) Turner’s Syndrome
Show Answer
Answer : c
Hints & Solution
(c) Down’s syndrome develops due to trisomy of the $21^{\text{st }}$ chromosome. Affected individual possess a characteristic appearance. They have short stature, small round head, broad forehead, open mouth and projecting lower lip (Mongoloid idiocy).
BETA
