In Pisum sativum, yellow seeds are dominant over green seeds. Round seeds are dominant over wrinkled seeds. If a true breeding Round green seeded plant is crossed with wrinkled and yellow seeded true-breeding plant, the phenotype of F1 hybrids is

When a dihybrid cross between true breeding Round and green seeded plant is crossed with wrinkled and yellow seeded plant, all the F1 plants resemble neither of the parents but show different phenotype Round and yellow seeds because Round is dominant over wrinkled and yellow is dominant over green