All simulators
BiologyHeredity
Punnett Square Cross
Cross two parents and read the genotype and phenotype ratio.
Controls
Live result
Genotype ratio
TT 1 : Tt 2 : tt 1
Phenotype ratio
Tall 3 : Dwarf 1
Tall offspring
75%
TT1
Tt2
tt1
Punnett square — gametes combiningGenotype ratio: TT 1 : Tt 2 : tt 1
Mendel's monohybrid cross of Tt × Tt gives a 3:1 phenotype and 1:2:1 genotype ratio.