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Question

A red flowered plant (RR) breeds with a White flowered plant (WW). The gene for petal color in these plants expresses incomplete dominance. What percentage of the offspring will have pink (RW) flowers?
50%
0%
25%
100%

Answer 1

In incomplete dominance, the heterozygous genotype (RW) expresses a phenotype that is a blend of the two homozygous phenotypes.

In this scenario:

• The red flowered plant has the genotype RR.
• The white flowered plant has the genotype WW.

When these two plants breed, all offspring will be heterozygous (RW), because:

RR (red) x WW (white) → All RW (pink)

Thus, 100% of the offspring will have pink flowers.

The correct answer is 100%.