2. Sickle cell anemia is a
Option 1: genetic disorder that results in abnormally shaped red blood cells,
Option 2. genetic disorder that results in defective hemoglobin,
Option 3: Options 1 & 2.
Option 4: infectious disease caused by a virus,
The answer is option 3 because people with sickle cell anemia have abnormal hemoglobin molecules that is called hemoglobin S, which stick to one another and form long, rod-like structures. These structures cause red blood cells to become stiff and shape into sickles or crescent moons.
