Which variable in a person with coronary artery disease (CAD) increases the likelihood of a strong genetic influence in its expression?
A)The disorder is not present in the person's dizygotic twin.
B)The disorder is present in a woman whose father had CAD.
C)The affected person has eaten a vegetarian diet for the past 5 years.
D)The disorder is present in about 5% of the person's maternal family members.

Question

Quizplus · Accepted Answer

If a woman's father had CAD, the risk of her having CAD or a myocardial infarction (MI) is 70% higher than that of a woman whose father did not have CAD. This person's maternal family members diagnosed with the disorder at a 5% incidence represents a much lower incidence than the national average. Dizygotic twins do not have identical gene sequences at all loci. So, the absence of the problem in a dizygotic twin does not support a strong genetic influence on expression of the disorder. A genetic problem can be modified somewhat but not to a great degree by dietary changes.

Which Variable in a Person with Coronary Artery Disease (CAD)