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 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 white parent?

Question

Quizplus · Accepted Answer

The white parent must be homozygous recessive at the W locus (ww) to produce white flowers, and it must also be homozygous at the B locus (BB) to ensure that the F1 generation can express blue when crossed with the pink parent.

In a Certain Species of Plant, Flowers Occur in Three