美洲原住民基因曾在复活节岛定居之前汇入波利尼西亚，这一成果由墨西哥CINVESTAV研究所Andrés Moreno-Estrada、Alexander G. Ioannidis等研究人员合作完成。相关论文于2020年7月8日在线发表于《自然》。
Title: Native American gene flow into Polynesia predating Easter Island settlement
Author: Alexander G. Ioannidis, Javier Blanco-Portillo, Karla Sandoval, Erika Hagelberg, Juan Francisco Miquel-Poblete, J. Vctor Moreno-Mayar, Juan Esteban Rodrguez-Rodrguez, Consuelo D. Quinto-Corts, Kathryn Auckland, Tom Parks, Kathryn Robson, Adrian V. S. Hill, Mara C. Avila-Arcos, Alexandra Sockell, Julian R. Homburger, Genevieve L. Wojcik, Kathleen C. Barnes, Luisa Herrera, Soledad Berros, Mnica Acua, Elena Llop, Celeste Eng, Scott Huntsman, Esteban G. Burchard, Christopher R. Gignoux, Luca Cifuentes, Ricardo A. Verdugo, Mauricio Moraga, Alexander J. Mentzer, Carlos D. Bustamante, Andrs Moreno-Estrada
Abstract: The possibility of voyaging contact between prehistoric Polynesian and Native American populations has long intrigued researchers. Proponents have pointed to the existence of New World crops, such as the sweet potato and bottle gourd, in the Polynesian archaeological record, but nowhere else outside the pre-Columbian Americas1,2,3,4,5,6, while critics have argued that these botanical dispersals need not have been human mediated7. The Norwegian explorer Thor Heyerdahl controversially suggested that prehistoric South American populations had an important role in the settlement of east Polynesia and particularly of Easter Island (Rapa Nui)2. Several limited molecular genetic studies have reached opposing conclusions, and the possibility continues to be as hotly contested today as it was when first suggested8,9,10,11,12. Here we analyse genome-wide variation in individuals from islands across Polynesia for signs of Native American admixture, analysing 807 individuals from 17 island populations and 15 Pacific coast Native American groups. We find conclusive evidence for prehistoric contact of Polynesian individuals with Native American individuals (around AD 1200) contemporaneous with the settlement of remote Oceania13,14,15. Our analyses suggest strongly that a single contact event occurred in eastern Polynesia, before the settlement of Rapa Nui, between Polynesian individuals and a Native American group most closely related to the indigenous inhabitants of present-day Colombia.