Question

When a blue flower is crossed with red flower, all of the offspring created are purple (incomplete dominance). Cross a purple flower with a red flower. What is the phenotypic ratio of the offspring created?

Answer 1

Answer AND Explanation:

Let B represent blue and R red flower.

       B     B

R     RB    RB

R     RB   RB

Therefore the first generation produced all purple flowers RB.

        R        B

R      RR      RB

R      RR      RB

In the second cross, the genotype ratio for RR: RB is 2:2

The phenotypic ratio is 2 red: 2 purple flower.