Mendel crossed true-breeding pea plants and found the dominant trait always appeared in the F₁ generation,but it appeared in a ________ ratio of dominant to recessive in the F₂ generation.

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Mendel's experiment showed that dominant traits always appeared in the F₁ generation, but they appeared in a 3:1 ratio of dominant to recessive in the F₂ generation. This means that for every 4 offspring in the F₂ generation, 3 would have the dominant trait and 1 would have the recessive trait, resulting in a 3:1 ratio.

Mendel Crossed True-Breeding Pea Plants and Found the Dominant Trait