A. Genetic disorder
B. virus disease
C. bacterial disease
D. diseases due to vitamin deficiency
Submitted by: Tasawar Hussain channa
Sickle cell anemia, or sickle cell disease (SCD), is a genetic disease of the red blood cells (RBCs). Normally, RBCs are shaped like discs, which gives them the flexibility to travel through even the smallest blood vessels. However, with this disease, the RBCs have an abnormal crescent shape resembling a sickle.