In a certain species of plant, flowers occur in three colors: blue, pink, and white. A pure-breeding pink plant is mated with a pure-breeding white plant. All of the F₁ are blue. When the blue F₁ plants are selfed, the F₂ plants occur in the ratio 9 blue : 3 pink : 4 white. The genotype that produces white is ww. The presence of one W allele allows pink or blue color to occur. The alleles at the hypostatic locus are B (blue) and b (pink) .
- What is the genotype of the F₁ plants?

Question

Quizplus · Accepted Answer

The F1 plants are blue, indicating they have at least one B allele and one W allele. The genotype Bb Ww allows for the segregation seen in the F2 generation.

In a Certain Species of Plant, Flowers Occur in Three