Tt × Tt Punnett square: monohybrid cross for pea plant height

An example figure from the Punnett Square generator.

A Punnett square titled Pea plant height crossing Tt × Tt, with gametes T and t on each side, offspring TT, Tt, Tt and tt, the tall cells shaded gray, a key for tall and short, and the genotype and phenotype ratios below — A Punnett square for Mendel’s pea plants under the chart title “Pea plant height”: Tt across the top and Tt down the side, with gametes T and t on each edge and the offspring TT, Tt, Tt and tt in the four cells. The tall cells are shaded gray and the short one left white, with a key below. The genotype and phenotype ratios are printed under the square.

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Answer key

Genotype ratio: 1 TT : 2 Tt : 1 tt
Phenotype ratio: 3 tall : 1 short

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