Flower color in a particular plant species is determined by one gene. The alleles of that gene can code for either red flowers or blue flowers. When a red plant and a blue plant are crossed, some of the offspring produce purple flowers. What is the genotype of the plants with purple flowers?

A. The genotype is BB because of incomplete dominance.

B. The genotype is Bb because of incomplete dominance.

C. The genotype is bb because of incomplete dominance.

D. The genotype has nothing to do with the color of the flower.

Option B.

The genotype is Bb because of incomplete dominance.

Explanation:

Incomplete dominance is a concept in genetics in which a dominant allele or trait is not completely expressed and does not mask the effect of recessive allele which result in the species physical appearances that blend both alleles. When a red and a blue plant are crossed, it give purple flowers, which shows that neither of the alleles is dominant.

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