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Health: Genetic Disorders

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1. Discuss how incomplete penetrance, variable expressivity, pleiotropy, and genetic heterogeneity can affect the severity of a disease in a family.
2. A person can lower risk of preventable types of cardiovascular disease by exercising regularly and following a diet low in saturated fats and simple carbohydrates and high in fruits and vegetables. Why are these approaches ineffective against long QT syndrome?
3. Explain how the molecular bases of the various forms of long QT syndrome make genetic heterogeneity very likely

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10. How incomplete penetrance, variable expressivity, pleiotropy, and genetic heterogeneity can affect the severity of a disease in a family.

In reference to incomplete penetrance the person that is experiencing a disease-causing genotype could possibly refrain from exhibiting the disease phenotype at all despite the capability of transmitting the disease causing mutation to the next generation. How this impacts the severity of the disease within the family has ...

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