Which of the Following Traits is an X-Linked Recessive Disorder

Question

Which of the following traits is an X-linked recessive disorder?
A) color blindness
B) Tay-Sachs
C) cystic fibrosis
D) sickle-cell disease
E) Marfan syndrome

Accepted Answer

Color blindness is an X-linked recessive disorder. The gene responsible for color vision is located on the X chromosome, and since males only have one X chromosome, they are more likely to inherit color blindness if their mother is a carrier of the gene. Females can also be carriers of the gene, but typically have a backup X chromosome with normal color vision.