In pea plants, the allele for purple flowers, P, is dominant over the allele for white flowers, p. Which conclusion about phenotype and genotype is possible?

Question

In pea plants, the allele for purple flowers, P, is dominant over the allele for white flowers, p. Which conclusion about phenotype and genotype is possible?

a. If a plant has white flowers, then it’s genotype must be pp.
b. If a plant has purple flowers, then it’s genotype must be PP.
c. If a plant has purple flowers, then it’s genotype must be Pp.
d. If a plant has white flowers, then it’s genotype must be Pp.

Answer 1

In pea plants, the allele for purple flowers, P, is dominant over the allele for white flowers, p. Which conclusion about phenotype and genotype is possible?

a. If a plant has white flowers, then its genotype must be pp.