Genetics Calculator

Free online genetics calculator. Punnett square, allele frequency. Perfect for students, teachers, and researchers.

Dihybrid Cross (2 traits)

Parent 1 Genotype

Parent 2 Genotype

Punnett Square (2×2)

Genotype Ratios

AA1/4 (25.0%)

Aa2/4 (50.0%)

aa1/4 (25.0%)

Phenotype Ratios

A-3/4 (75.0%)

aa1/4 (25.0%)

Probability of each outcome:

P(AA) = 1/4 = 25.0%

P(Aa) = 2/4 = 50.0%

P(aa) = 1/4 = 25.0%