1. In a dihybrid cross between RrTt and RRtt, what are the genotype and phenotype ratios of the offspring, assuming R and T are dominant? R codes for round seed, while r codes for wrinkled seed. T codes for tall height, while t codes for short height. (Show your Punnett Square). Hint: Do the Punnett Square for each trait separately and then combine them using the branch diagram as shown in Figure 3.11