A certain flower has a genotype with an allele for yellow petals and an allele for blue petals, but it grows only blue petals. Which statement could be true?
A) Both alleles are recessive.
B) Both alleles are dominant.
C) Only the allele for blue petals is recessive.
D) Only the allele for yellow petals is recessive.

Question

Quizplus · Accepted Answer

The flower grows only blue petals, indicating that the allele for blue petals is dominant over the allele for yellow petals, which must be recessive.

A Certain Flower Has a Genotype with an Allele for Yellow