Principles of Inheritance and Variation Question 195
195. A person with the sex chromosomes XXY suffers from
[1997]
(a) Down’s syndrome
(b) Klinefelter’s syndrome
(c) Turner’s syndrome
(d) Gynandromorphism
Show Answer
Answer : b
Hints & Solution
(b) Down’s syndrome develops due to trisomy of chromosome number 21. In Turner’s syndrome, the effect appears due to fusion of a gamete without sex chromosome and a gamete with one