Taxonomic Distribution
See also: WildtypeThe dun coat color is thought to be a primitive trait in the horse. This is because equines appearing in prehistoric cave paintings are dun, and because several closely related species in the genus Equus are known to have been dun. These species include both subspecies of Equus ferus (the extinct tarpan and the extant, but endangered Przewalski's horse), the extinct Equus lambei, and the extant onager and kiang.
Read more about this topic: Dun Gene
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