In a certain species of plant, flowers occur in three colors: blue, pink, and white. a pure-breeding pink plant is mated with a pure-breeding white plant. all of the f1 are blue. when the blue f1 plants are self-fertilized, the f2 occur in the ratio 9 blue: 3 pink: 4 white. (c) what is the genotype of the f1 plants? use b/b for the hypostatic gene and w/w for the epistatic gene.