Figure S8.
qpWave Analyses, Related to STAR Methods
qpWave analyses with all pairs (Pairs_Rank0) or triplets (Triplets_Rank0 or Triplets_Rank1) of all Andean and North Chile groups when compared with Peru_Lauricocha_8600BP. Rank 0 and 1 refers to a model in which all populations in the analysis fit as derived from one or two ancestral populations, respectively, relative to the outgroups (rejection of these ranks means that additional sources of ancestry are required to model the populations). Modern groups and shotgun samples were excluded due to potential for artifacts. Peru_Lauricocha_5800BP and Peru_Lauricocha_3600BP were also excluded due to their previously known lack of California Channel Island-related ancestry (Posth et al., 2018). Color-coding refers to pairs or triples that include groups that consistently do not fit in some two-source or three-source models: the Cuncaicha 3300 BP and 4200 BP individuals are the only groups that are consistently poorly modeled even without a third source of ancestry. Related to Table S8.