PLZ XPLAIN BARR BODY..?
As you know, males have only one X chromosomes and in females, there are two X chromosomes so to achieve dosage compensation, one X chromosome in females gets inactivated. This inactivated chromosomes is known as barr body. It is present in somatic cells. Chromosomes itself are condensed form of chromatin. Barr body is an example of heterochromatin type of chromatin in which histone proteins are tightly packed,giving darkly stained appearence.