Which of the following sex-linked diseases is characterized by the absence of a clotting factor?
A)hemophilia
B)fragile X syndrome
C)color-blindness
D)Duchenne muscular dystrophy
E)None of the answer choices is true.

Question

Quizplus · Accepted Answer

Hemophilia is a sex-linked recessive disorder that is characterized by the absence or deficiency of a clotting factor, most commonly Factor VIII or Factor IX. This results in prolonged bleeding and difficulty in clotting after injury or surgery. Fragile X syndrome, color-blindness, and Duchenne muscular dystrophy are also sex-linked disorders but do not involve clotting factors.

Which of the Following Sex-Linked Diseases Is Characterized by the Absence