X-Inactivation ــــــــــــــــــــــــ

Question

X-inactivation ــــــــــــــــــــــــ.
A)only occurs in males
B)is the deactivation of both X chromosomes in all females
C)shuts down one of the two X chromosomes in females
D)occurs by the action of histone acetylation

Accepted Answer

X-inactivation is the process by which one of the two X chromosomes in females is inactivated in order to balance gene expression between males and females. This occurs through the action of non-coding RNA molecules and modifications to chromatin structure, not histone acetylation.