RT Journal Article SR Electronic T1 Population genomics of the Viking world JF bioRxiv FD Cold Spring Harbor Laboratory SP 703405 DO 10.1101/703405 A1 Ashot Margaryan A1 Daniel Lawson A1 Martin Sikora A1 Fernando Racimo A1 Simon Rasmussen A1 Ida Moltke A1 Lara Cassidy A1 Emil Jørsboe A1 Andrés Ingason A1 Mikkel Pedersen A1 Thorfinn Korneliussen A1 Helene Wilhelmson A1 Magdalena Buś A1 Peter de Barros Damgaard A1 Rui Martiniano A1 Gabriel Renaud A1 Claude Bhérer A1 J. Víctor Moreno-Mayar A1 Anna Fotakis A1 Marie Allen A1 Martyna Molak A1 Enrico Cappellini A1 Gabriele Scorrano A1 Alexandra Buzhilova A1 Allison Fox A1 Anders Albrechtsen A1 Berit Schütz A1 Birgitte Skar A1 Caroline Arcini A1 Ceri Falys A1 Charlotte Hedenstierna Jonson A1 Dariusz Błaszczyk A1 Denis Pezhemsky A1 Gordon Turner-Walker A1 Hildur Gestsdóttir A1 Inge Lundstrøm A1 Ingrid Gustin A1 Ingrid Mainland A1 Inna Potekhina A1 Italo Muntoni A1 Jade Cheng A1 Jesper Stenderup A1 Jilong Ma A1 Julie Gibson A1 Jüri Peets A1 Jörgen Gustafsson A1 Katrine Iversen A1 Linzi Simpson A1 Lisa Strand A1 Louise Loe A1 Maeve Sikora A1 Marek Florek A1 Maria Vretemark A1 Mark Redknap A1 Monika Bajka A1 Tamara Pushkina A1 Morten Søvsø A1 Natalia Grigoreva A1 Tom Christensen A1 Ole Kastholm A1 Otto Uldum A1 Pasquale Favia A1 Per Holck A1 Raili Allmäe A1 Sabine Sten A1 Símun Arge A1 Sturla Ellingvåg A1 Vayacheslav Moiseyev A1 Wiesław Bogdanowicz A1 Yvonne Magnusson A1 Ludovic Orlando A1 Daniel Bradley A1 Marie Louise Jørkov A1 Jette Arneborg A1 Niels Lynnerup A1 Neil Price A1 M. Thomas Gilbert A1 Morten Allentoft A1 Jan Bill A1 Søren Sindbæk A1 Lotte Hedeager A1 Kristian Kristiansen A1 Rasmus Nielsen A1 Thomas Werge A1 Eske Willerslev YR 2019 UL http://biorxiv.org/content/early/2019/07/17/703405.abstract AB The Viking maritime expansion from Scandinavia (Denmark, Norway, and Sweden) marks one of the swiftest and most far-flung cultural transformations in global history. During this time (c. 750 to 1050 CE), the Vikings reached most of western Eurasia, Greenland, and North America, and left a cultural legacy that persists till today. To understand the genetic structure and influence of the Viking expansion, we sequenced the genomes of 442 ancient humans from across Europe and Greenland ranging from the Bronze Age (c. 2400 BC) to the early Modern period (c. 1600 CE), with particular emphasis on the Viking Age. We find that the period preceding the Viking Age was accompanied by foreign gene flow into Scandinavia from the south and east: spreading from Denmark and eastern Sweden to the rest of Scandinavia. Despite the close linguistic similarities of modern Scandinavian languages, we observe genetic structure within Scandinavia, suggesting that regional population differences were already present 1,000 years ago. We find evidence for a majority of Danish Viking presence in England, Swedish Viking presence in the Baltic, and Norwegian Viking presence in Ireland, Iceland, and Greenland. Additionally, we see substantial foreign European ancestry entering Scandinavia during the Viking Age. We also find that several of the members of the only archaeologically well-attested Viking expedition were close family members. By comparing Viking Scandinavian genomes with present-day Scandinavian genomes, we find that pigmentation-associated loci have undergone strong population differentiation during the last millennia. Finally, we are able to trace the allele frequency dynamics of positively selected loci with unprecedented detail, including the lactase persistence allele and various alleles associated with the immune response. We conclude that the Viking diaspora was characterized by substantial foreign engagement: distinct Viking populations influenced the genomic makeup of different regions of Europe, while Scandinavia also experienced increased contact with the rest of the continent.