Mendel crossed true-breeding plants bearing yellow seeds with true-breeding plants bearing green seeds. He then crossed the offspring from that mating with each other (F₁ generation). What was the genotypic ratio among the offspring of the F₁ generation?

Question

Quizplus · Accepted Answer

When Mendel crossed true-breeding plants with yellow seeds (AA) with true-breeding plants with green seeds (aa), all the F₁ generation offspring were heterozygous (Aa). Therefore, the genotypic ratio would be 50% Aa/aA and 50% AA/aa in the F₁ generation, resulting in choice B as the correct answer.

Mendel Crossed True-Breeding Plants Bearing Yellow Seeds with True-Breeding Plants