Fig. 1From: A meta-analysis of genome-wide association studies for average daily gain and lean meat percentage in two Duroc pig populationsPCA plot of population structure showing the top two principle components. pc1: principle component 1; pc2: principle component 2. The red dot represents the American origin Duroc pigs, the green dot represents the Canadian origin Duroc pigs, and the yellow dot represents the Large WhiteBack to article page