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Punnett Square Calculator
Generate monohybrid genetic crosses and predict offspring probabilities
Instructions: Enter single-locus diploid genotypes (e.g., Aa, BB, tt) for both parents. The tool automatically separates alleles into gametes and calculates expected genotypic ratios.
Parent Genotypes
Cross Results & Probability Ratios
⚠️ This Punnett square tool assumes standard Mendelian inheritance with complete dominance. Real-world breeding and genetic outcomes can vary due to probability, linkage disequilibrium, gene expression variance, and lethal alleles. Always consult professional geneticists or breeders for critical pedigree management.