Which one of the following can help in the diagnosis of the genetic basis of a disorder?

Which of the following diseases is not related to the circulatory system?

Which of the following genetic disorders is often associated with heart disease?

Christiaan Barnard is known for:

$A$ patient of $Diabetes \text{ } mellitus$ excretes glucose in urine even when he is kept on a carbohydrate-free diet. The most likely reason for that is:

Diabetes mellitus is related to which of the following?