Fig. 1From: Signatures of selection for resistance to Haemonchus contortus in sheep and goatsSheep and goat PCA plots. The PCA plots show the population structure of the breeds under the study based on the first two principal components (PC). For sheep (a), the PC1 and PC2 explain 25.6 and 18.4% of the total variation, respectively. For goats (b), the PC1 and PC2 explain 21.7 and 17.2% of the total variation observed in the populations, respectivelyBack to article page