W19 is one of the many different variations of white spotting.
¶ Phenotype
W19 causes face markings, white socks and belly spots. Typical white spotting characteristics are also present: the white patches often have irregular, jagged edges and white ticking is usually present in the pigmented areas.
W19 affects any base colour, but the presence of grey may make the white pattern harder to see. When the pattern is very expressive, W19 may make it difficult to recognise the underlying colour of the horse without genetic testing.
| W19 - Arabian Horse |
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¶ Genotype
W19 is a white spotting mutation on the KIT locus (a missense mutation at exon 8). In real life, horses homozygous for W19 have a nearly fully white phenotype. However, In Horse Reality, breeding two horses together that both have any of the white spotting alleles (W/n), will result in a failed pregnancy on the 4th day if the foal is W/W (25% chance). A homozygous white spotting foal will, therefore, never be born.
Below, the resulting phenotype of each genotype is listed:
- W19/Wx = Failed pregnancy
- W19/n = White spotting 19
- n/n = No white spotting
W19 can be tested at the Laboratory.
¶ Breeds
The founder of W19 is suspected to be the Arabian Horse Fantasia Vu, born in 1990. The following table lists all breeds that can currently have the W19-allele in-game.
| Breeds |
| Akhal-Teke Horse |
| Arabian Horse |
| Brabant Horse |
| Brumby Horse |
| Camargue Horse |
| Cleveland Bay |
| Exmoor Horse |
| Finnhorse |
| Fjord Horse |
| Friesian Horse |
| Haflinger Horse |
| Icelandic Horse |
| Irish Cob Horse |
| Kladruber Horse |
| Knabstrupper |
| Lipizzaner |
| Lusitano |
| Mongolian Horse |
| Mustang Horse |
| Namib Desert Horse |
| Noriker Horse |
| Norman Cob |
| Oldenburg Horse |
| Pantaneiro Horse |
| Pura Raza Española |
| Quarter Horse |
| Shetland Pony |
| Shire Horse |
| Suffolk Punch |
| Thoroughbred |
| Trakehner Horse |
| Welsh Pony |
¶
References
- Bellone R., Sponenberg D. P., Equine Color Genetics, 4th Edition, 2017, Wiley-Blackwell,
- The University of Sydney, Online Mendelian Inheritance in Animals (OMIA); https://omia.org/OMIA000209/9796/; Access: December 2022
- Fantasia Vu horse pedigree; https://www.allbreedpedigree.com/fantasia+vu2; Access: December 2022