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Gregor Mendel experimented with pea plants and discovered how traits are passed from one generation to another. In Mendel’s experiment, he crossed a tall pea plant (TT) with a short pea plant (tt). If four plants are produced from the two parent plants, which of the following phenotypical traits is MOST likely to be presented in the offspring?

A Four tall plants.

Tt, Tt, Tt, Tt. When a tall (TT) plant is crossed with a short (tt) plant, the resulting offspring will all be tall (their phenotype) but be carriers of the short gene. This is because the tall plant only has a T to donate, and the short plant only has a t to donate. Each offspring gets one from each parent, so because the tall one gives the T and the short one gives the t, the offspring will all be Tt.

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