Fig. 4
From: Epistatic interactions between at least three loci determine the “rat-tail” phenotype in cattle
Manhattan plot of the whole-genome association analysis for RTS classification score (RT) phenotype. a Fitting a single-locus mixed model (MM) including a genomic relationship matrix. b Case–control study (CC) for the trait RTS classification score (RT) phenotype. The upper horizontal line represents the genome-wide significance threshold q = 0.05, the lower horizontal line represents the nominal p value = 0.05