A diagram showing one of Mendel’s crosses. True-breeding strains of pea plants with smooth and ...

A diagram showing one of Mendel’s crosses. True-breeding strains of pea plants with smooth and wrinkled peas were used as the P1 generation. All the offspring in the F1 generation had smooth peas. Self-fertilization of F1 plants gave rise to plants with smooth and wrinkled peas in the F2 generation. About three-fourths of the peas were smooth, and about one-fourth were wrinkled.


P1: Smooth X wrinkled
F1: Smooth
Self-fertilize F1 plants
5,474 1,850
F2: Smooth wrinkled
Total peas in F2: 7,324
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