500
Sasha’s mother has sickle-cell disease. Her father does not have the disease and is not a carrier. Sasha has one brother and one sister. First complete a Punnett square of the dad and mom to determine the children’s if the children have sickle-cell disease and their genotype. Second, draw a pedigree chart that shows the genotypes of each person in Sasha’s family.
What is all the offspring should be a carrier. In the pedigree, mom should be completely shaded in, dad should be blank and all the children should be half shaded in.