In pea plants,purple flower color is dominant to white flower color.If in the P generation,a pure-breeding white flowering pea plant is crossed with a pure-breeding purple flowering pea plant,what will be the expected genotypes of the F₂ generation?

Question

Quizplus · Accepted Answer

In this cross, the pure-breeding white flower (recessive) parent would have the genotype "aa" and the pure-breeding purple flower (dominant) parent would have the genotype "AA". Their offspring (F1 generation) would all be heterozygous "Aa", displaying the dominant purple flower trait. When these F1 heterozygous plants are self-crossed to produce the F2 generation, the expected genotypic ratio is 1 AA : 2 Aa : 1 aa, which corresponds to 1/4 homozygous dominant, 1/2 heterozygous, and 1/4 homozygous recessive.

In Pea Plants,purple Flower Color Is Dominant to White Flower