Fig. 1From: Using imputation-based whole-genome sequencing data to improve the accuracy of genomic prediction for combined populations in pigsPrincipal component analysis (PCA) for three Yorkshire populations. XD, LM and ZX represent three Yorkshire populations from three Chinese pig breeding farms; PC1 (3.9%) = first principal component (variance explained by PC1 = 3.9%); PC2 (2.1%) = second principal component (variance explained by PC2 = 2.1%)Back to article page