Statement 1: Genetic disorder caused by change in the molecular structure of haemoglobin is sickle cell anaemia.

Statement 2: It results in the production of sickle-shaped WBC.

Statement 1 is true and statement 2 is false

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Statement 1 is false and statement 2 is true

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Both the statements are false

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Both the statements are true

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Solution

The correct option is A Statement 1 is true and statement 2 is false
Sickle-cell anaemia is a genetic disorder. It arises due to the replacement of glutamic acid by valine at the sixth position of the haemoglobin chain. As a result, the shape of the RBC changes to sickle-shaped from biconcave. These RBCs cannot pass through the blood vessels and have a tendency to clot, resulting in anaemia. Clogged blood vessels reduces blood circulation due to which tissues becomes deprived of oxygen.

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Similar questions

Statement 1: A blood disease caused by gene mutation is sickle cell anaemia.

Statement 2: It results in the production of sickle-shaped WBCs

The area $λ$ enclosed by two concentric circles of radius 5 cm and 12 cm is ___ $c m^{2}$

Statement1 : $c o s^{2} A$ + $s i n^{2} A$ = 1

Statement2 : $s e c^{2} A$ + $t a n^{2} A$ = 1

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