Sickle-cell anemia is caused by
A) an abnormal form of acetylcholine.
B) an abnormal form of iron.
C) too little iron.
D) an abnormal form of hemoglobin.
E) Actually, the cause of this disease is unknown.

Question

Quizplus · Accepted Answer

Sickle-cell anemia is caused by an abnormal form of hemoglobin, known as hemoglobin S, which distorts the shape of red blood cells into a sickle shape, impairing their function and flow through blood vessels.

Sickle-Cell Anemia Is Caused by