The harmful allele of sickle cell anemia has not been eliminated from human population. Such afflicted people derive some other benefit. Discuss.

Tobacco contains ……….. which raise blood pressure and increase heart rate.

Cushing's syndrome which is characterised by wasting of limb muscles and accumulation of fat in the trunk region is due to hypersecretion of

‘Itaria-itaria' disease is caused by

Penicillin was used in