3:1
homozygous dominant, heterozygous dominant, heterozygous dominant and homozygous recessive.
F2 generation
In Mendel's experiments, recessive traits were visible in the F2 generation. After crossing two purebred plants (P generation), the F1 generation exhibited only the dominant traits. However, when the F1 plants were self-pollinated, the F2 generation displayed a 3:1 ratio of dominant to recessive traits, revealing the recessive traits in a subset of the plants.
F2 generation
The Ratio is 3:1
f1 Generation
F1 generation
F2 generation
F1 generation
f2 generation
3:1
3 dominant to 1 recessive
All of the F1 generation are heterozygous, therefore 100% exhibit the dominant phenotype. The F2 generation has a ratio of 1 homozygous dominant: 2 heterozygous: 1 homozygous recessive. This results in a phenotypic ratio of 3 dominant: 1 recessive.
All of the F1 generation are heterozygous, therefore 100% exhibit the dominant phenotype. The F2 generation has a ratio of 1 homozygous dominant: 2 heterozygous: 1 homozygous recessive. This results in a phenotypic ratio of 3 dominant: 1 recessive.
F2 generation
The Ratio is 3:1
recessive trait
f2 generation