Question

in certain species of summer squash fruit color is determined by two interacting by genes. a dominant allele W determines white color while a recessive allele allows the fruit to be colored. in homozygous ww individual a second gene will produce color- A big G will make the squash green while gg will produce yellow squash. a white squash and yellow squash are crossed and the F1 gives 50% white fruit and 50% green. what were the genotypes of the parents of the F1?