Answer:
Option C, Is an autosomal dominant condition resulting in pleiotropy
Explanation:
Marfan syndrome is a genetic disease that is autosomal dominant and effects the connective tissue in various parts of the body. The common symptoms of this disorder are – abnormalities in all connective tissues thereby causing abnormalities in blood vessels, eyes, joints, heart etc.
Sun individuals have elongated fingers and toes and they are tall and slender. Thus, due to abnormalities in various body parts, it is suspected to effect the unrelated phenotypic traits and hence it shown pleiotropism.
Thus, option C is correct