Figure 3.

Principal Component Analysis of Pre- and Postcapture Samples Based on Sequencing One Million Reads Each

Principal component analysis of SNPs overlapping between the 1000 Genomes reference panel and each ancient individual, with Native American individuals also included in (E) and (F). The principal components were calculated with the modern individuals only, and the ancient individual was then projected onto the plot. Shown are (A) V2 (Bulgarian tooth) precapture and (B) postcapture; (C) M4 (Bronze Age hair) precapture and (D) postcapture; and (E) NA40 (Peruvian bone) precapture and (F) postcapture. Population key: ASW, Americans of African ancestry in SW USA; AYM, Aymara from the Peruvian Andes; CEU, Utah residents (CEPH) with Northern and Western European ancestry; CHB, Han Chinese in Beijing, China; CHS, Southern Han Chinese; CLM, Colombians from Medellin, Columbia; FIN, Finnish in Finland; GBR, British in England and Scotland; IBS, Iberian population in Spain; JPT, Japanese in Tokyo, Japan; KAR, Karitiana from the Brazilian Amazon; LWK, Luhya in Webuye, Kenya; MAY, Mayan from Mexico; MXL, Mexican ancestry from Los Angeles, USA; PUR, Puerto Ricans from Puerto Rico; TSI, Toscani in Italy; YRI, Yoruba in Ibadan, Nigeria.