Plot of Principal Components for 446 individuals representing 15 populations. Individuals are shaded by different colors according to their predefined population affiliations, and the legend is displayed on the lower right of the plot. A: plot of the first two principle components. B: plot of the first and the third principle components.
Xu et al. BMC Genetics 2010 11:18 doi:10.1186/1471-2156-11-18