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Which of the following is an example of pleiotropy?(A) Haemophilia(B) Thalassemia(C) Sickle cell anaemia(D) Colour blindness |
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Answer» (C) Sickle cell anaemia Pleiotropy: Influencing more than one trait by a single gene. Haemophilia: A metabolic disorder characterized by free bleeding from slight wound due to lack of formation of clotting substances. It is sex-linked recessive gene. Sickle cell anaemia: It is a hereditary disease caused by a recessive mutant gene that controls haemoglobin structure, usually lethal in homozygotes. Thalassemia: It is a group of hereditary haemolytic anemias. Colour blindness: It is a sex-linked disease. |
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