Genetics
Table of Genes
A chart of major colour, markings and coat variety loci, genes and examples of varieties.
| Locus | Chr | Gene | Example of Variety |
| A locus |
2 |
Ay - dominant Yellow. Dominates over all others, lethal whem homozygous. | Red |
| Avy - viable Yellow | Brindle | ||
| Ahvy - hypervariable Yellow | Brindle | ||
| Aw - white-bellied Agouti | Chinchilla some strains | ||
| A - agouti, wild type | Agouti, agouti group | ||
| at - Tan belly. | Tans | ||
| am - mottled agouti | Brindle | ||
| a - nonagouti | Black, black group | ||
| ae - extreme nonagouti | (extreme) Black | ||
| B Locus | 4 | B - full colour | |
| bc - cordovan | Chocolate | ||
| b - brown | Chocolate (light) | ||
| bt | 15 | bt - belted | Belted |
| C locus | 7 | C - full colour | |
| cch - chinchilla | Chinchilla, Marten Sable, Fox | ||
| ce - extreme dilution | Beige, Coffee, Bone when heterozygous with c | ||
| ch - himalayan | Siameses, Himalayan when heterozygous with c | ||
| c - albinism | PEW | ||
| Ca | 15 | Ca - Caracul (curly coat), straightens almost totally with age. | Astrex (poor) |
| ca - normal coat | |||
| D locus | 9 | D - full colour | |
| (Myo5a, myosin Va) | d - blue dilution | Blue | |
| E locus | 8 | E - full colour | |
| e - recessive Yellow | Red | ||
| fr | 7 | Fr - normal coat | |
| fr - Frizzy (curly coat) | Frizzie | ||
| go | 5 | Go - Normal coat | |
| go - Angora-Y | long hair | ||
| go - Angora | long hair | ||
| hs | ? | Hs - no spotting | |
| hs - head spot, greatly affected by modifiers | |||
| lhr | 8 | lgh - "long hair" lacks undercoat in adults on body, identifyable from 5 weeks onwards. | |
| ln | 1 | Ln - full colour | |
| ln - Leaden (gene that mimics the Blue dilution) | "mock Blue" | ||
| Mo locus | X | Mobr - Brindle (sex-linked) | Brindle |
| mo - no brindling | |||
| P locus | 7 | P - full colour | |
| p - pink-eyed dilution | |||
| Pe | 13 | Pe - normal colour | |
| pe - Pearl (dilutes yellow and black pigment, affects hair roots more) | |||
| Re | 11 | Re - Rex (curly coat) | Astrex |
| re - normal coat | |||
| rst |
? |
rst - rosette | Abessinian |
| Rw | Rw - Rumpwhite (lethal when homozygous) | Rumpwhite | |
| S locus | 14 | S - no white spotting | |
| s - recessive white spotting | piebald, Broken, Even | ||
| sa | 13 | Sa - normal coat | |
| sa - satin coat | Satin | ||
| si | 10 | Si - no silver ticking | |
| si - silver ticking | Silver Grey etc | ||
| U | ? | U - umbrous | Sable |
| Va | 3 | Va - Varitint Waddler | Tricolor |
| W locus | 5 | W - dominant white spotting, lethal when homozygous | Variegated |
| Wsh - sash | Banded | ||
| Wbd - banded | Capped | ||
| + - no white spotting |