Comparing ancestry of selected groups in HGDP versus POPRES for the top two principal components. SGA was performed using the balanced sample (Figure 3(d)). Individuals selected for comparison from POPRES and HGDP are highlighted using colors other than turquoise. (a) HGDP-French (black) versus POPRES-French (fuchsia); (b) HGDP-Orcadian (black) versus POPRES-British & Irish (fuchsia); (c) HGDP-Tuscan (black) and HGDP-N. Italian (blue) versus POPRES-Italian (fuchsia); and (d) HGDP-French Basque (black) versus POPRES-French (fuchsia), POPRES-Spanish & Portuguese (blue).
