Question: Suppose that the 3-loci , each with two alleles (A,a,B,b,C,c) determine the difference in height between two homozygous strains of a plant. These genes are additive and equal in their effects on plant height. One strain (aa bb cc) is 10cm in height. The other strain (AA BB CC) is 22cm in height. The two strains are crossed, and the resulting F1 are inbred to F2 progeny. Give the phenotype and the expected proportions of the F2 progeny. The contribution of A,B,C is 2 cm.