Fig 4. St-linked pigmentation phenotypes show quantitative variation in the Almond inner CNV region.

Black dots represent results of a TaqMan copy number assay targeting an intron of Mlana. Mean copy numbers for each phenotype are shown as red dots. Most individuals without St-linked phenotypes have the expected 1 or 2 copies (because St is a sex-linked locus, females have a minimum of 1 copy and males have a minimum of 2). All other St-linked phenotypes are associated with an expansion of the CNV in the Almond candidate region on scaffold ScoHet5_227, indicating an allelic series at St. Numbers above each phenotype indicate number of individuals sampled.