Fig. 2

Population genomic analysis of YFCs in the context of other Chinese indigenous chickens. a PCA showing the evolutionary relationships among YFCs, other Chinese indigenous chickens, red junglefowl (RJF), and green junglefowl (GVF). b Neighbor joining tree including all chickens and RJF (root). The tree was viewed and edited using FigTree software (v1.4.3). c-d ADMIXTURE analysis for K = 2 up to K = 5. The lowest cross validation error is observed when K = 2