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

Question

Quizplus · Accepted Answer

In codominance, both alleles are expressed equally in the heterozygous condition. In this case, the red and white alleles are both expressed in the flower, resulting in a two-color flower. Incomplete dominance would result in a blending of red and white, producing a pink flower. Environmental effects, polygenic inheritance, and epistatic interactions do not apply to this scenario.

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