Assume that in squashes the difference in fruit weight between a 3-lb type and a 6-lb type results from three independently segregating allelic pairs, A/a, B/b, and C/c. Each capital-letter allele contributes a half pound to the weight of the squash. From a cross of a 3-lb plant (aa bb cc) with a 6-lb plant (AA BB CC), what will be the phenotypes (weights) of F1 AND F2? What will be their distribution?