Consider that 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.

Question

The offspring of a cross between an RR plant and a WW plant would be

(1 point)
Responses

all white.
all white.

pink and white.
pink and white.

all pink.
all pink.

red and pink.

Answer 1

In a case of incomplete dominance, the heterozygous genotype shows a blend of traits from both homozygous parents. In this scenario, the RR plant has red flowers, and the WW plant has white flowers.

When these two plants are crossed, the offspring will all inherit one R allele from the RR parent and one W allele from the WW parent, resulting in a genotype of RW for all offspring. This genotype displays incomplete dominance, which means the flower color will be a mixture or blending of red and white, yielding pink flowers.

Thus, the correct response is:

all pink.