Because the gene that leads to Huntington disease is dominant, a child who has one parent with Huntington disease has a _____ chance of developing the disorder.
A)50 percent
B)100 percent
C)25 percent
D)75 percent

Question

Quizplus · Accepted Answer

Huntington disease is caused by a dominant allele, so if one parent has the disease (and is heterozygous), there is a 50% chance the child will inherit the dominant allele and develop the disorder.

Because the Gene That Leads to Huntington Disease Is Dominant