Which of the following types of anemia is characterized by a defect in the synthesis of the globin chains of hemoglobin?

A Iron-deficiency anemia
B Vitamin B12 deficiency anemia
C Sideroblastic anemia
D Thalassemia ✓

Explanation

Thalassemia is a genetic disorder that affects the production of the globin chains of hemoglobin, leading to anemia.

Source

Williams Hematology
Hematology Hematology: Anemia Hematology: Anemia Hard MEDICAL Confidence: high