If a human interphase nucleus contains three Barr bodies, it can be assumed that the person
A)has hemophilia.
B)is a male.
C)has four X chromosomes.
D)has Turner syndrome.
E)has Down syndrome.

Question

Quizplus · Accepted Answer

Barr bodies are inactivated X chromosomes. Therefore, if a human interphase nucleus contains three Barr bodies, it can be assumed that the person has four X chromosomes. This is a characteristic of individuals with conditions such as Klinefelter syndrome, Triple X syndrome, or tetrasomy X.

If a Human Interphase Nucleus Contains Three Barr Bodies, It