Hypercholesterolemia (HC) is caused by a dominant allele on chromosome 19. This allele has mutations which cause a change in the order of DNA nucleotides. People with HC are more likely to get heart disease. The diagram shows the heart of a person who has heart disease. The graph shows the results of a study of men aged 30 to 49. The study measured the cholesterol levels in the blood of the men. It also recorded if the men developed signs of heart disease. Explain the possible link between cholesterol and heart disease and if this link is supported by the graph. Use evidence from the diagram and the graph in your answer. – 7604