Breeding Calculator
Calculate offspring genotypes and phenotypes from genetic crosses using Punnett squares.
Parent Genotypes
Gene 1
Mendelian Ratios
Monohybrid Aa × Aa: 1:2:1 genotype, 3:1 phenotype
Dihybrid AaBb × AaBb: 9:3:3:1 phenotype
Phenotype Ratio (Gene 1)
Dominant
3
75%
Recessive
1
25%
Punnett Square (Gene 1)
| A | a | |
|---|---|---|
| A | AA | Aa |
| a | Aa | aa |
Genotype Frequencies
Aa2/4 (50%)
AA1/4 (25%)
aa1/4 (25%)
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: Standard Mathematical References
by Various
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.