Who is a "carrier" of X-linked disorders,such as hemophilia and color blindness?

Question

Quizplus · Accepted Answer

X-linked disorders are caused by mutations on the X chromosome. Since females have two X chromosomes, they can be carriers of X-linked disorders if they inherit a nonfunctioning allele on one of their X chromosomes, but not on the other. Heterozygous females who inherit one normal and one nonfunctioning allele are carriers but do not express the disorder. Therefore, option B is the correct choice. The other options are incorrect because carriers do not have the disorder, and males only have one copy of the X chromosome, making them more susceptible to X-linked disorders.

Who Is a "Carrier" of X-Linked Disorders,such as Hemophilia and Color