Why is hemophilia more prevalent in males?
A)Fathers can only pass the diseased allele along to their sons.
B)The Y chromosome activates the diseased allele on the X chromosome.
C)There is no other X chromosome to offset the diseased gene.
D)The diseased gene is located on the Y chromosome.

Question

Quizplus · Accepted Answer

Hemophilia is caused by a recessive gene on the X chromosome. Females have two X chromosomes, so even if they inherit the diseased allele from one parent, they typically have a healthy version on the other chromosome that can compensate. Males, on the other hand, have only one X chromosome and one Y chromosome. If they inherit the diseased allele from their mother, there is no other X chromosome to provide a healthy version to offset it. Therefore, hemophilia is more common in males.

Why Is Hemophilia More Prevalent in Males