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 would be red (heterozygous). In the F2 generation, a 3:1 ratio of red to blue would appear. This ratio would continue in the F3 generation, resulting in both red and blue phenotypes.

A Single Pair of Genes Controls Red Versus Blue Flower