2022 Phase 2 Principles of Inheritance and VariationMendelian Disorders Easy Question 2 of 6 in Mendelian Disorders

Given below are two statements: Statement I: Sickle cell anaemia and Haemophilia are autosomal dominant traits. Statement II: Sickle cell anaemia and Haemophilia are disorders of the blood. In the light of the above statements, choose the correct answer from the options given below:

A Statement I is incorrect but Statement II is correct
B Both Statement I and Statement II are correct
C Both Statement I and Statement II are incorrect
D Statement I is correct but Statement II is incorrect

The answer is A.

Solution

Sickle cell anaemia is an autosomal recessive trait whereas haemophilia is an X-linked recessive trait, so Statement I is incorrect. Both diseases are disorders of the blood, so Statement II is correct.

Concept Mendelian disorders

Mendelian Disorders in past papers

6 questions from this chapter have appeared across 4 exam years.