Figure 2

Principal component analyses of Northern European populations. The color-coded group membership is shown with the symbols corresponding to Figure 1 legend information. The subject sizes were as shown in Figure 1 with the exception of the Swedish group for which the sample size was reduced to 40 subjects. (A) Northern European population groups without inclusion of ORC, CEU, and BAS subjects. (B) and (C) show PCA results when either ORC and CEU, or BAS and CEU groups are added. Inclusion or exclusion of CEU did not affect the PCA pattern (data not shown).