Can I change the assumptions?

Yes. Enter values that match your situation and review the displayed assumptions and limitations before using the result.

Is the result guaranteed?

No. The result is an estimate and should be independently verified before any medical, legal, financial, academic, engineering or purchasing decision.

Coat Colour Calculator

Estimate simple offspring coat-colour probabilities from two parent allele pairs using a transparent two-locus inheritance model. Review the assumptions below and continue with the related guides and calculators linked on this page.

Parent 1 dominant A allele chanceParent 2 dominant A allele chanceParent 1 dominant B allele chanceParent 2 dominant B allele chance

Fill in the required fields to see your result.

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Use the primary result together with the supporting outputs. Related Calciro resources: [Punnett Square Calculator](/punnett-square-calculator), [Probability Calculator](/probability-calculator), [Canine Heat Cycle Calculator](/canine-heat-cycle-calculator), [How to Use a Punnett Square Calculator](/guides/how-to-use-punnett-square-calculator).

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How to Use This Calculator

Enter the requested values using the units shown. Keep all values consistent and review every assumption before interpreting the result.

Formula & Methodology

The calculator applies the displayed formulas directly to the entered values. Supporting outputs expose intermediate calculations rather than hiding them.

Worked example

If each parent has a 50% chance of passing a dominant allele at both loci, the simple model estimates each dominant trait separately and then combines them.

Real coat colour inheritance can involve multiple genes, linkage, epistasis, incomplete dominance, sex linkage and breed-specific variants. This simplified model is not a genetic test.

Educational genetics tool only. Confirm breeding and health decisions with qualified veterinary and genetic professionals.

Related Guides

How Simple Coat Colour Inheritance Probabilities Are Estimated
Learn how to use the Coat Colour Calculator, understand its assumptions and interpret the estimate.

Frequently Asked Questions

What does the Coat Colour Calculator calculate?: Estimate simple offspring coat-colour probabilities from two parent allele pairs using a transparent two-locus inheritance model.
Can I change the assumptions?: Yes. Enter values that match your situation and review the displayed assumptions and limitations before using the result.
Is the result guaranteed?: No. The result is an estimate and should be independently verified before any medical, legal, financial, academic, engineering or purchasing decision.

Last updated 7/22/2026