Red flower color is dominant over yellow flower color. a. What would be the genotypic ratio of the offspring produced from a heterozygous red-flowered plant and a homozygous yellow-flowered plant? b. What would be the phenotypic ratios of the offspring pr

a. The heterozygous red-flowered plant would have the genotype Rr, and the homozygous yellow-flowered plant would have the genotype rr. When these two plants are crossed, the possible genotype combinations of their offspring would be Rr and rr. Thus, the genotypic ratio of the offspring would be 1:1. b. Since the trait for red flower color is dominant over yellow flower color, the offspring with the genotype Rr would also have red flowers. The only way for an offspring to have yellow flowers would be if it had the rr genotype. Therefore, the phenotypic ratio of the offspring would be 1:1, with half of the offspring having red flowers (Rr genotype) and the other half having yellow flowers (rr genotype).