In humans,males have only one X chromosome and females have two,yet housekeeping X chromosome genes are expressed in roughly equal amounts in males and females.How can this be explained?
A)The X chromosome is hyperactivated in males.
B)The X chromosomes are hypoactivated in females.
C)One X chromosome in females is inactivated.
D)The Y chromosome in males actually contains similar genes as the X chromosome.

Question

Quizplus · Accepted Answer

In females, one of the two X chromosomes is randomly inactivated during embryonic development through a process known as X-chromosome inactivation. This ensures that females only express the genes on one X chromosome, similar to males. As a result, housekeeping X chromosome genes are expressed in roughly equal amounts in males and females.

In Humans,males Have Only One X Chromosome and Females Have