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.

the answer would be 2, if crossing over doesn’t occur 2 out of 4 of the daughter cells will have that allele.

hope this : )