Question

Huntington's disease causes a slow degeneration of the nervous system, beginning at about age fifty. Patients with Huntington's disease lose control of their limbs and become forgetful. As the disease grows more severe, it paralyzes and kills them. The disorder is dominant. Suppose that Bill's genotype is (Hh) and his wife Sharon is (hh). Identify the chances that his daughter, Grace, will also have Huntington's.

Answer 1

Because bill's genotype is Hh and Sharon's is hh the chances that Grace will also have Huntington's is 50% because the H is dominant.