Mendelian Genetics
Explore single-gene inheritance from known parent genotypes. This model does not predict specific betta colors or fin types.
Punnett Square (1 locus)
Genotype AA
25%
Genotype Aa
50%
Genotype aa
25%
Phenotype Probabilities
Dominant trait
75%
Recessive trait
25%
Related Guide
Punnett-style modeling helps visualize expected trait distributions before pairing fish.
Actual expression can vary due to polygenic effects and environmental influence.
Prioritize health and line stability over single-trait selection.
FAQ
What does dominant vs recessive mean?
Dominant traits appear when at least one dominant allele is present.
Can this guarantee offspring phenotype?
No. It estimates Mendelian probabilities, not guaranteed outcomes.
How many genes does this model cover?
One locus with two alleles and complete dominance. Enter known parent genotypes; this tool cannot infer them from appearance.
How should I use this for breeding plans?
Combine genetic estimates with health, temperament, and ethical standards.
Did this answer your question?
This tool models simple dominant/recessive Mendelian inheritance. Real aquarium genetics are often polygenic — actual outcomes may vary. Results are estimates based on general guidelines. Individual species may have specific requirements.