If the maternal X chromosome is inactive and becomes the Barr body in one cell, then the maternal X chromosome becomes the Barr body in every cell of that woman's body.

Question

Quizplus · Accepted Answer

The inactivation of the X chromosome (whether maternal or paternal) is random in each embryonic cell, so different cells can have different inactive X chromosomes. This process leads to a mosaic pattern of X inactivation across the tissues of the body.

If the Maternal X Chromosome Is Inactive and Becomes the Barr