Answer:
(c) Sickle-cell anaemia is related
to malaria not to typhoid and person suffering from sickle-cell anaemia are
resistant to malarial parasite ar RBC of sickle-cell anaemic patients is
distored in shape that not affected by Plasmodium sp.It is known that
heterozygotes (),
having both types of haemoglobinshow resistance to malarial infection because
the body targets the P.falciparum infected cells for destruction.
In contrast, individuals homozygous for
normal haemoglobin () suffer
high mortality rates in early childhood due to malarial infection.
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