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Calcimator

Punnett Square Generator

Calculate offspring genotype and phenotype ratios from parent genotypes using a Punnett square for monohybrid crosses.

Inputs

Results

AA Probability

25%

Aa Probability

50%

aa Probability

25%

Phenotype Ratio

3:1

Parent 1 GenotypeAa
Parent 2 GenotypeAa
Dominant Phenotype75%
Recessive Phenotype25%
How to Use This Calculator
  1. Enter Parent 1 Dominant Alleles and Parent 2 Dominant Alleles.
  2. Review AA Probability (%), Aa Probability (%), and aa Probability (%).
  3. Use Parent 1 Genotype and Parent 2 Genotype to inform your decision.
  4. Use the chart to visualize the results and explore different scenarios by adjusting inputs.
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Formula

Aa × Aa → 1 AA : 2 Aa : 1 aa

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