Question

Which one of the following is an autosomal recessive disorder?

• A. Albinism
• B. Huntington's syndrome
• C. Marfan's syndrome
• D. Neurofibromatosis-1

Hint:

Three options are dominant; the pigment disorder is the recessive one.

Answer 1

The Correct Option is A

Step 1: The question asks which listed condition follows autosomal recessive inheritance.
Step 2: Albinism results from mutations in genes of the melanin synthesis pathway (commonly the tyrosinase gene), and most types are inherited in an autosomal recessive manner, making option (a) correct.
Step 3: Huntington's disease (b), Marfan syndrome (c) and neurofibromatosis-1 (d) are all classic autosomal dominant disorders.
Step 4: Therefore the only autosomal recessive condition in the list is albinism.