Marfan Syndrome is a genetic disorder that affects connective tissue, leading to abnormal skeletal development, lens deformities in the eyes, and heart complications. The disorder is caused by a mutation in the FBN1 gene. The following DNA sequences show a section of the FBN1 gene in an unaffected individual and an individual with Marfan syndrome. Unaffected Individual: CCG-CCG-CTT

Individual with Marfan syndrome: CGG-CCG-CTT

Marfan syndrome is an autosomal dominant disorder, so the mutation that causes it is mutation. According to the DNA sequences shown, Marfan syndrome can be caused by a mutation in the FBN1 gene. This mutation is likely a mutation.