Punnett Square & Genetics Calculator
Generate monohybrid (2x2) and dihybrid (4x4) genetic crosses, genotype ratios, and phenotype percentage outcomes.
2×2 Punnett Grid
BB
Bb
Bb
bb
Genotype Ratio: 1 BB : 2 Bb : 1 bb (25% : 50% : 25%)
Phenotype Ratio: 3 Dominant : 1 Recessive (75% : 25%)
How to Use
- Enter the parent 1 genotype and parent 2 genotype.
- Select Generate Punnett Square to view the 2×2 punnett grid.