In humans the allele for albinism is recessive to the allele for normal skin pigmentation. if two parents are heterozygous, what is the parents genotype?

If both parents are heterozygous (Ww), there is a 75% chance that any one of their offspring will have a widow's peak (see figure). A Punnett square can be used to determine all possible genotypic combinations in the parents.

the answer is d p: cell, q: organ, r: organ system, s: tissue