A single pair of genes controls red versus blue flower color in larkspurs, and red is dominant phenotype. Which of the following phenotypes should occur in the F₃ generation if the parental generation was pure breeding strains for red and blue phenotypes ? A) all blue B) all purple C) red and blue D) red, purple, and blue E) all red

Question

Quizplus · Accepted Answer

In the F1 generation, all offspring will be red due to the dominance of the red allele. In the F2 generation, a 3:1 ratio of red to blue will appear. In the F3 generation, the same red and blue phenotypes will continue to segregate.

A Single Pair of Genes Controls Red Versus Blue Flower