Q. Klinefelter’s syndrome is :
(a) XO
(b) XXX
(c) XXY
(d) XXXY
Solution :
Correct option : C Klinefelter syndrome is the condition when a male is having one or more extra X chromosomes. Human males have one Y and one X chromosome (XY). A male with Klinefelter’s syndrome has sex chromosome arrangement of XXY/XXXY or XXXY.