4) What disease counter acts the affects of malaria?

A. Sickle cell anemia

B. Rhino Virus

C. Trypanosoma

D. Ultimate

A

Explanation:

people develop a sickle cell disease, a condition in which the real blood cell are abnormally shaped. If the faulty copies of the gene for the oxygen - carrying protein haemoglobin. The faulty gene persist because even carrying one copy of it confers some resistance to malaria