Chapter 9.3, Problem 31E

GENETICS Refer to Example 4. If the offspring are crossed successively with plants of genotype $aa$ only, show that in the long run, all the flowers produced by the plants will be white.

APPLIED EXAMPLE 4 Genetics In a certain species of flowers, a plant of genotype (genetic makeup) $AA$ has red flowers, a plant of genotype $Aa$ has pink flowers, and a plant of genotype $aa$ has white flowers, where $A$ is the dominant gene and $a$ is the recessive gene for color. If a plant of one genotype is crossed with another plant, then the color of the offspring’s flowers is determined by the genotype of the parent plants.