An inherited form of anemia characterized by a crescent-shaped RBC is:
A) thalassemia.
B) sickle cell anemia.
C) pernicious anemia.
D) sideropenia.

Question

Quizplus · Accepted Answer

Sickle cell anemia is characterized by crescent-shaped RBCs, which are caused by an abnormal hemoglobin molecule. Thalassemia can also cause anemia, but its characteristic RBC shape is not crescent-shaped. Pernicious anemia is a type of anemia caused by a vitamin B12 deficiency, while sideropenia is a type of anemia caused by an iron deficiency. Neither of these conditions is characterized by crescent-shaped RBCs.

An Inherited Form of Anemia Characterized by a Crescent-Shaped RBC