A) XY
B) XX
C) XXX
D) XYY
Correct Answer: B
Solution :
Barr body also known as sex chromatin, X-chromatin and drumstick is partial inactivation and development of facultative heterochromatin in one of the two X-chromosomes in interphase nuclei. They were discovered by "Murray Barr". Number of Barr bodies is one less than the total X-chromosomes. Barr body is absent in normal male. XX - Normal female, one barr body. XY - Normal male, Barr body absent. XXX - 2 Barr body They are super females. XYY - Barr body absent. They are super males.
You need to login to perform this action.
You will be redirected in
3 sec
