a. Progeria is an autosomal dominant trait. Two parents that age normally have a child with progeria, who ages quickly and is sterile. For this trait, what is the genotype of the father? b. A homozygous white female horse is bred with a homozygous red male horse and it gives birth to a horse that has a mixture of red and white hairs, where each individual hair is either all white or all red. What is the genotype of the offspring?