 Researchers gave the allele they discovered the name "Sabino 1" with the expectation of finding genes yet to be named "Sabino 2", "Sabino 3", and so on.However, the next allele to be discovered on KIT caused a dominant white phenotype, and so was given the name W1.After that, all other alleles found at the KIT locus were given names in the W series, even the ones that would better be described as sabino than dominant white.