Why Does Huntington's Disease Have a Heritability Ratio of 1

question 76

Multiple Choice

Why does Huntington's disease have a heritability ratio of 1.0?

• A)The gene that causes Huntington's disease is dominant.
• B)In families where Huntington's disease is prevalent,it tends to appear at least once every generation.
• C)If someone inherits the gene for Huntington's disease,it is inevitable that he/she will acquire the disease.
• D)Because of environmental influences,it is difficult to predict if someone will acquire the disease despite having the diseased allele.

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