Punnett Square Calculator
Calculate genetic inheritance patterns and genotype ratios for monohybrid and dihybrid crosses.
Monohybrid Cross Input
Enter the alleles for each parent (e.g.,"Aa" or "BB"). Both uppercase and lowercase are accepted.
About Punnett Squares
A Punnett square is a diagram used to predict the genetic outcomes of a cross between two parents. It was developed by Reginald Punnett in the early 20th century and is widely used in genetics education.
To use this calculator:
- Choose between Monohybrid and Dihybrid cross
- Enter the alleles for Parent 1 (e.g., "Aa" or "AaBb")
- Enter the alleles for Parent 2
- Click "Calculate Punnett Square"
- View the resulting Punnett square and possible genotypes with their ratios
This calculator provides not only the Punnett square but also the genotype ratios, helping you quickly understand the probability of different genetic outcomes in offspring.