Consider a plant with genotype RR has red flowers and a plant with genotype WW has white flowers. This plant species expresses incomplete dominance for flower color when the plant is heterozygous. The offspring of a cross between an RR and a WW plant would be

Question

A: All white

B: All pink

C: Pink and white

D: red and pink

Answer 1

In incomplete dominance, the phenotype of the heterozygous offspring is a blend of the phenotypes of the parents. In this case, the plant with genotype RR has red flowers, and the plant with genotype WW has white flowers.

When these two plants are crossed, the offspring will be heterozygous (RW) and express a flower color that is a blend of red and white, which is typically pink.

Therefore, the offspring of a cross between an RR and a WW plant would be:

B: All pink