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    Understanding Mendelian heredity.

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    Huntington's chorea is a rare, fatal disease that usually develops in middle age. It is caused by a dominant allele. A phenotypically normal man in his early twenties learns that his father has developed Huntington's chorea.

    (a) What is the probability that he will himself develop the symptoms later on?

    (b) What is the probability that his son will develop the symptoms in later life?

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    Solution Summary

    The expert examines Mendelian Heredity. The probability of developing symptoms are given.