Principles of Inheritance and Variation Question 168
168. Sickle cell anaemia has not been eliminated from the African population because
[2006]
(a) it is not a fatal disease
(b) it provides immunity against malaria
(c) it is controlled by dominant genes
(d) it is controlled by recessive genes
Show Answer
Answer : b
Hints & Solution
(b) In sickle cell anaemia, RBCs become sickle shaped which are not supportive for the growth of malarial parasite Plasmodium so it provides immunity against malaria disease.
