The child of a normal parent and a parent who develops Huntington disease has a _________ chance having a disease allele.

Question

Quizplus · Accepted Answer

Huntington's disease is inherited in an autosomal dominant manner, meaning that having just one copy of the mutated gene (from one parent) is enough to cause the disorder. Therefore, if one parent has the disease (and thus one copy of the mutated gene) and the other parent is normal, each child has a 50% chance of inheriting the mutated gene and potentially developing the disease.

The Child of a Normal Parent and a Parent Who