Fig 2From: Genome-wide insights into population structure and genetic history of tunisian local cattle using the illumina bovinesnp50 beadchipPCA results of allele frequencies obtained from 38,597 SNPs genotyped in 878 cattle individuals from 37 populations. The first two principal components, PC1 and PC2, accounted for 13Â % and 7Â %, respectively of the total variation. The first PC axis (x-axis) aligned populations according to an indicine/taurine gradient while the second (y-axis) aligned them according to an AFT/EUT gradientBack to article page