1.

Which one of the following sets is correctly matched? (a) Diphtheria, pneumonia and leprosy : Hereditary (b) AIDS, syphilis and gonorrhoea : Bacterial (c) Colour blindness, haemophilia and sickle cell anaemia : Sex linked (d) Polio, Japanese encephalitis and plague : Nematode

Answer»

(c) Colour blindness, haemophilia and sickle cell anaemia : Sex-linked

Explanation:

Diphtheria is a respiratory tract illness caused by Corynebacterium diphtheriae. Pneumonia is an inflammatory condition of the lung caused by virus or bacteria. Leprosy or Hansen's disease is caused by Mycobacterium leprae and Mycobacterium lepromatosis. AIDS, syphilis and gonorrhoea are viral diseases. Polio, Japanese encephalitis and plague are viral diseases. Colourblindness, haemophilia and sickle cell anaemia are X-linked (sex-linked) disease conditions.



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