Fig. 1From: Estimating the purebred-crossbred genetic correlation of body weight in broiler chickens with pedigree or genomic relationshipsPrincipal component plot of the genotype data for the parental lines and the crossbreds. Values for principal component 1 (x-axis) are plotted against values for principal component 2 (y-axis). Between brackets is the variance explained by each principal component. Colours indicate genetic groupBack to article page