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Mendelian Cross Solver

Build Punnett squares for complete, incomplete, codominant, sex-linked, and ABO crosses with ratios, walkthroughs, and exportable grids.

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Custom phenotype labels (optional)

Aa
A
AA
Dominant
Aa
Dominant
a
Aa
Dominant
aa
Recessive
Dominant
Recessive

Genotype ratio: 1:2:1(aa 1, Aa 2, AA 1)

Phenotype ratio: 3:1(Dominant 3, Recessive 1)

Genotype

aa (1)Aa (2)AA (1)

Phenotype

Dominant (3)Recessive (1)