What is the significance of Barr bodies and d | vedclass

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(B) Barr bodies (found in somatic cells of females) and drumsticks (found in polymorphonuclear leukocytes) represent the inactivated $X$ chromosome,kn

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They indicate the presence of more than one $X$ chromosome in the cells.

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(B) Barr bodies (found in somatic cells of females) and drumsticks (found in polymorphonuclear leukocytes) represent the inactivated $X$ chromosome,known as facultative heterochromatin. In individuals with more than one $X$ chromosome,the number of Barr bodies is equal to $n-1$,where $n$ is the total number of $X$ chromosomes. Therefore,their presence indicates the existence of more than one $X$ chromosome in the cell.

What is the significance of Barr bodies and drumsticks to geneticists and biologists?

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