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Genotype–phenotype association results for three phenotypic traits considered as potential indicators of hybridization: black coat (top), white claws (center) and spur on the hind legs (also known as dewclaw; bottom panel). Significance thresholds for the –log10 Chi-Squared P values are indicated, corresponding to a Bonferroni-corrected probability of 0.01. (Photo credits, from top to bottom: Renato Fabbri, Willy Reggioni, and Luigi Molinari).
