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Coat genetics calculator (v1)

A simplified Mendelian cross for loci A (agouti), B (black/chocolate) and D (dilution). Educational model — not a DNA test.

Queen (dam)
Sire

Outcomes per locus

  • Locus A — agouti / solid

    • Aa — 50%
    • aa — 25%
    • AA — 25%

  • Locus B — black / chocolate

    • Bb — 50%
    • BB — 50%

  • Locus D — dense / dilute

    • Dd — 50%
    • DD — 50%

Combined offspring outcomes

  • Aa Bb Dd — 12.5%

    black, tabby · Often in EMS: n + tabby code (21–25)

  • Aa Bb DD — 12.5%

    black, tabby · Often in EMS: n + tabby code (21–25)

  • Aa BB Dd — 12.5%

    black, tabby · Often in EMS: n + tabby code (21–25)

  • Aa BB DD — 12.5%

    black, tabby · Often in EMS: n + tabby code (21–25)

  • aa Bb Dd — 6.3%

    black, solid · Often in EMS: n

  • aa Bb DD — 6.3%

    black, solid · Often in EMS: n

  • aa BB Dd — 6.3%

    black, solid · Often in EMS: n

  • aa BB DD — 6.3%

    black, solid · Often in EMS: n

  • AA Bb Dd — 6.3%

    black, tabby · Often in EMS: n + tabby code (21–25)

  • AA Bb DD — 6.3%

    black, tabby · Often in EMS: n + tabby code (21–25)

  • AA BB Dd — 6.3%

    black, tabby · Often in EMS: n + tabby code (21–25)

  • AA BB DD — 6.3%

    black, tabby · Often in EMS: n + tabby code (21–25)

Simplified model: no O (red, sex-linked), W (white), silver, or full breed rules. Not a DNA test and not official FIFe genetics.

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