Which of the following is NOT a sex-linked disorder?
A) Down syndrome
B) hemophilia
C) Fragile X syndrome
D) color blindness

Question

Quizplus · Accepted Answer

Down syndrome is caused by an extra copy of chromosome 21 and is not related to the sex chromosomes, so it is not a sex-linked disorder. Hemophilia, Fragile X syndrome, and color blindness are all caused by mutations on genes located on the X chromosome and are therefore sex-linked disorders.

Which of the Following Is NOT a Sex-Linked Disorder