In peas, the yellow allele is dominant over the green allele. A plant with yellow peas was crossed to a plant with green peas. The resulting plants were 50% yellow and 50% green. What are the genotypes of the parents in this cross?
◦ YY × yy
◦ YY × Yy
◦ Yy × yy
◦ Yy × Yy
◦ yy × yy