Aflowering plant species produces two flower colors. blue flowers are dominant over white flowers. what is the genotype of any blue flowered plant in this particular species?

a)a red allele and a white allele exist on two chromosomes.

b)a red allele is present on both homologous chromosomes.

c)a blue and a white allele exist on a single chromosome.

d)a blue allele exists on at least one of the homologous chromosomes.