Punnett Square Calculator
BiologyPredicts the probability of inheriting specific genes and determines genotypic and phenotypic ratios based on the parental genotypes.
How to use this calculator
Start with your values, or try a preset.
Enter Parent 1 Alleles and Parent 2 Alleles in the units shown.
Read Genotypic Ratio and Phenotypic Ratio in the results panel. Results update as you change the inputs.
Choose a preset to load an example, then adjust the values for your situation.
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