Exactly _____ percent of the offspring of an individual with Huntington's disease will develop the disease (if they live long enough).
A) 25
B) 50
C) 33
D) 100

Question

Quizplus · Accepted Answer

Huntington's disease is caused by a dominant allele, which means that individuals only need one copy of the allele to develop the disease. Therefore, each child of an affected parent has a 50% chance of inheriting the allele and developing the disease (assuming the parent only has one copy of the allele and not a new mutation). It is important to note that the age of onset and severity of the disease can vary, so not all individuals who inherit the allele will necessarily develop symptoms.

Exactly _____ Percent of the Offspring of an Individual with Huntington's