A 25-year-old male presents with tall stature, arachnodactyly, lens subluxation, and an echocardiogram revealing aortic root dilation. This constellation of findings is characteristic of a genetic disorder primarily affecting connective tissue due to a mutation in the *FBN1* gene. What is the most likely inheritance pattern for this condition?

The correct answer to the question "A 25-year-old male presents with tall stature, arachnodactyly, lens subluxation, and an echocardiogram revealing aortic root dilation. This constellation of findings is characteristic of a genetic disorder primarily affecting connective tissue due to a mutation in the *FBN1* gene. What is the most likely inheritance pattern for this condition?" is Option C: Autosomal dominant.

The other options — A) Autosomal recessive, B) X-linked recessive, D) Mitochondrial inheritance — are incorrect for this USMLE Exam Prep question. As explained above: The description matches Marfan syndrome, which is an autosomal dominant disorder caused by a mutation in the *FBN1* gene encoding fibrillin-1, a key component of connective tissue.