Biology

Rabbit Color Calculator

Predict offspring coat color for a single gene.

Calculated Output

Black offspring (%) 75

Brown offspring (%) 25

Formula: Punnett square on the B (black/brown) gene

Step-by-Step Breakdown

1. Values used:

3. Black offspring = 75%

4. Brown offspring = 25%

Did this calculator solve your problem today?

The math behind it

Each parent passes one B-gene allele. A rabbit is brown only with two recessive (bb) alleles; otherwise it's black.

Bb × Bb → 75% black, 25% brown.

Only one gene?

Real coat color also depends on A, C, D, E and other loci — this covers just the B gene.