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). what are the chances that his daughter, grace, will also have huntington's? a) 0% b) 25% c) 50% d) 100%

Because the gene is dominant the it is the H and dominates over the other genes it is put with. In other words if the offspring gets the H he or she will also have Huntington's Disease.  You make your gene chart as I have attached below. There are 4 boxes that have the H in them so this means that there is a 50% chance that the offspring will have Huntington's Disease.

i'm gonna put a couple so you can chose from

explanation:

if you know the fur color of the offspring mice, you can use the ratios to identify the genotypes of the parents.

if either parent mouse passes a dominant allele, the offspring will have black fur.

if the parental mice has two different fur color (i.e white and black) , the color of the offspring's fur would be either black, white, or the combination of both (grey)

hope this : )