Which of the Following Statements is Most True Regarding X-

Question

Which of the following statements is most true regarding X- inactivation?
A)X- inactivation is caused primarily by the expression of several small noncoding RNAs sncRNA .
B)When a cell divides,the inactive X- chromosome remains inactive in the newly formed cell.
C)X- chromosomes that remain active are called Barr bodies.
D)X- inactivation is more common in males than females.
E)X- inactivation results in repressing the expression of approximately 75% of the genes on the X- chromosome.

Accepted Answer

X-inactivation is a process where one of the two X chromosomes in female mammals is inactivated to ensure dosage compensation between males (XY) and females (XX). This inactivation is stable and inherited through cell divisions, meaning that once an X chromosome is inactivated in a cell, it remains inactive in all of the cell's descendants.