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Punnett Square (Single Trait) — result sheet
Offspring genotype odds for a one-gene cross of two parents.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Each parent donates one allele at random; the 4 boxes give P(AA), P(Aa), P(aa).
Combine each parent's two alleles into four equally likely boxes and count AA, Aa, and aa. The dominant phenotype covers AA plus Aa under complete dominance.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Parent A genotype — 3 choices
- Parent B genotype — 3 choices
Worked example
| Input | Value |
|---|---|
| Parent A genotype | Aa |
| Parent B genotype | Aa |
AA 25%, Aa 50%, aa 25%; dominant phenotype 75%.
Assumptions and limits
- Single gene with two alleles; complete dominance of A.
- Random segregation; all four boxes equally likely.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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