The gene for nerve deterioration X (NDX)disorder is located on the X chromosome.What can we conclude?
A)It is more prevalent in females.
B)It is more prevalent in males.
C)Only mothers can pass down the gene for NDX.
D)Only fathers can pass down the gene for NDX.

Question

Quizplus · Accepted Answer

Since the gene for NDX disorder is located on the X chromosome, it means it is sex-linked. Males only have one X chromosome while females have two, so if a male inherits the gene for NDX from his mother, he will express the disorder. On the other hand, females need to inherit two copies of the gene (one from each parent) to express the disorder, making it less prevalent in females. Therefore, the disorder is more prevalent in males.

The Gene for Nerve Deterioration X (NDX)disorder Is Located on the X