Testcross results of three yellow, round individuals
What is the expected F1 phenotypic ratio if the test parent had a genutype of GGWW?
If the test parent had a genotype of GGWw, the F1 would show a genotype ratio of 1/2 GgWw and 1/2 Ggww. If the test parent had a genotype of GgWw, the F1 would show a genotype ratio of 1/4 GgWw, 1/4 Ggww, 1/4 ggWw, 1/4 ggww. If the test parent had a genotype of GgWW, the F1 would show a genotype ratio of 1/2 GgWw and 1/2 ggWw.