In human female, barr bodies are formed by

Options

A. Inactivation of mother's X chromosome
B. Inactivation of father's X chromosome
C. Inactivation of both mother's and father's X chromosomes
D. Inactivation of either mother's or father's X chromosome

Answer

A

Explanation

A Barr body is the inactive X chromosome in a female somatic cell, rendered inactive in a process called lyonization, in those species in which sex is determined by the presence of the Y (including humans) or W chromosome rather than the diploidy of the X.