Punnett Square Calculator
Generate Punnett squares for mono-, di- and trihybrid crosses with genotype and phenotype ratios.
How to use the Punnett Square Calculator
- Enter or select: Parent 1 genotype, Parent 2 genotype.
- The results (Punnett square, Genotype ratios, Phenotype ratios) are calculated instantly as you type.
- Use “Copy link” to share the calculation with the same input values.
Formula
- Gametes from independent assortment; offspring = all gamete combinations
About this tool
Uppercase letters are dominant alleles. A_ means at least one dominant allele.