Two parents are concerned that their new baby, who has blonde hair, may have been switched in the hospital. The mother is homozygous for her brown hair, and the father is heterozygous with brown hair as well. Some members of the family have blonde hair. Is this possible? Did the hospital make a mistake? Justify your answer. Be very detailed in your explanation in order to receive full credit. Be sure to include the genotypes the parents would need to have.