In a cross between an individual with Huntington disease and an unaffected individual,what are the chances their progeny will have the disease,considering that it is a dominant trait?

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Quizplus · Accepted Answer

Huntington disease is a dominant trait. Therefore, if one parent has the disease, they must have at least one dominant disease-causing allele. In a cross with an unaffected individual who does not have any dominant disease-causing alleles, the offspring will inherit one allele from each parent. This means that each offspring will have a 50% chance of inheriting the dominant disease-causing allele and thus having the disease.

In a Cross Between an Individual with Huntington Disease and an Unaffected