Principal component analysis of diverse population groups. The analysis used the same data set indicated in Figure 2. The population groups are shown by the color coded symbols. The sub-Saharan African groups are designated S-S African in this figure. A, shows the PC1 and PC2 results from the different ethnic groups excluding the admixed populations. C, shows the PC1 and PC2 results for the African American and Mexican American subjects that were run together with the individual subjects shown in A. B, and D show the results for the same subject groups for PC3 and PC4.
Nassir et al. BMC Genetics 2009 10:39 doi:10.1186/1471-2156-10-39