You have two true-breeding rose bushes, one with red flowers and one with white flowers. A cross between these two roses yields a bush with pink flowers. The pink flower color is an example of
A) codominance.
B) incomplete dominance.
C) environmental effects.
D) polygenic inheritance.
E) epistatic interaction.

Question

Quizplus · Accepted Answer

Incomplete dominance occurs when neither allele is completely dominant over the other, resulting in a blended phenotype. In this case, the red and white alleles are incompletely dominant, resulting in the pink phenotype. Codominance would result in both red and white being expressed equally, which is not the case here. Environmental effects, polygenic inheritance, and epistatic interactions do not apply to this scenario.

You Have Two True-Breeding Rose Bushes, One with Red Flowers