Recessive disorders related to genes found on the X chromosome but not on the Y chromosome are more commonly expressed in ________.
A)children
B)adults
C)females
D)males

Question

Quizplus · Accepted Answer

Recessive disorders related to genes on the X chromosome (X-linked recessive disorders) are more commonly expressed in males because males have only one X chromosome. Thus, if a male inherits a recessive gene on the X chromosome, he will express the disorder since there is no corresponding gene on the Y chromosome to counteract it. Females, having two X chromosomes, are less likely to express the disorder unless they inherit two copies of the recessive gene (one from each parent).

Recessive Disorders Related to Genes Found on the X Chromosome