Punnett Square Calculator
Generate Punnett squares to visualize and predict the outcomes of genetic crosses.
Parent 1 Alleles
Parent 2 Alleles
Punnett Square
| A | a | |
|---|---|---|
| A | AA | Aa |
| a | Aa | aa |
Genotype Frequencies:
AA1/4 (25%)
Aa2/4 (50%)
aa1/4 (25%)
Phenotype Frequencies:
Dominant3/4 (75%)
Recessive1/4 (25%)
About Punnett Squares
A Punnett square is a diagram used to predict the genotypes of offspring from a genetic cross. It shows all possible combinations of alleles from both parents. Use uppercase letters for dominant alleles and lowercase for recessive alleles.
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