How Many Barr Bodies Would an Individual with a XXY

Question

How many Barr bodies would an individual with a XXY genotype possess?
A) 0
B) 1
C) 2
D) None of the answers are correct

Accepted Answer

Individuals with XXY genotype have one Barr body because only one X chromosome is inactivated. The Y chromosome does not contain the necessary genes for inactivation.