Expert inputs — loci & traits
Tip: change Sex then pick red genotype; the checker will flag biologically inconsistent picks (e.g. a male with XO/XO unless XXY selected).
Result
Choose options and press the check button.
Trait info / glossary
Select any dropdown to see glossary text for that trait. The tool uses these rules: sex-linked red is X-linked; B locus has B/b/bl; D is recessive; I = inhibitor (silver); A = agouti; cs/cb = colorpoint/sepia; S/W white.
Quick reference (rules used)
- Sex-linked red (O) is X-linked: females have two X genotypes (XO/Xo etc.); males are XO/Y or Xo/Y. Tortoiseshell normally only females. Rare tortie males generally XXY (Klinefelter) or chimera.
- B locus has B (black) > b (chocolate) > bl (cinnamon). Two black parents can produce chocolate OR cinnamon only if carriers match.
- D locus (dilution) is recessive: d/d produces dilute colors (black→blue, chocolate→lilac, cinnamon→fawn, red→cream).
- I (inhibitor) causes silver/smoke: acts on agouti/nonagouti to create smoke or silver tabby.
- Colorpoint (cs/cb) — temperature sensitive albinism: colorpoint cats have pale bodies & blue eyes.
- S / W white spotting and dominant white interact with eye color (dominant white often produces blue or odd eyes).