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Which of the following is an example of an autosomal dominant trait-linked disorder?

Option: 1

Hemophilia A

Option: 2

Duchenne muscular dystrophy

Option: 3

 Huntington's disease

Option: 4

Cystic fibrosis

Answers (1)


Autosomal dominant trait-linked disorders are caused by the presence of a single copy of a mutated gene on one of the autosomes. Inheritance of these disorders does not depend on the sex of the individual. Examples of autosomal dominant trait-linked disorders include Huntington's disease, Marfan syndrome, and familial hypercholesterolemia. Hence option 3 is the correct answer.

Explanation for the incorrect options : 

Option 1 is incorrect because Hemophilia A is an X-linked recessive disorder.

Option 2 is incorrect because Duchenne muscular dystrophy is an X-linked recessive disorder.

Option 4 is incorrect because cystic fibrosis is an autosomal recessive disorder.

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Anam Khan

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