Person: Lawson, Ann
Loading...
Email Address
AA Acceptance Date
Birth Date
Research Projects
Organizational Units
Job Title
Last Name
Lawson
First Name
Ann
Name
Lawson, Ann
3 results
Search Results
Now showing 1 - 3 of 3
Publication Palaeo-Eskimo Genetic Ancestry and the Peopling of Chukotka and North America(Springer Science and Business Media LLC, 2019-06) Flegontov, Pavel; Rohland-Pinello, Nadin; Mallick, Swapan; Flegontova, Olga; Jeong, Choongwon; Keating, Denise; Lawson, Ann; Oppenheimer, Jonas; Raff, Jennifer; Skoglund, Pontus; Stewardson, Kristin; Vasilyev, Sergey; Veselovskaya, Elizaveta; Hayes, M. Geoffrey; Krause, Johannes; Pinhasi, Ron; Reich, David; Changmai, Piya; Adamski, Nicole; Bolnick, Deborah; Culleton, Brendan; Harper, Thomas; Kennett, Douglas; Kim, Alexander; Lamnidis, Thiseas; Olalde, Iñigo; Potter, Ben; Sattler, Robert; Vajda, Edwards; O’Rourke, Dennis; Schiffels, Stephan; Broomandkhoshbacht, Nasreen; Candilio, Francesca; Friesen, Max; Altınışık, EzgiPaleo-Eskimos were the first people to settle vast regions of the American Arctic around 5,000 years ago, and were subsequently joined and largely displaced around 1,000 years ago by ancestors of present-day Inuit and Yup’ik1-3. The genetic relationship between Paleo-Eskimos and Native American, Inuit, Yup’ik and Aleut populations remains uncertain4-7. Here we present new genomic data for 48 ancient individuals from Chukotka, East Siberia, the Aleutian Islands, Alaska, and the Canadian Arctic. We co-analyze these data with new data from present-day Alaskan Iñupiat and West Siberian populations and published genomes. Employing new methods based on rare allele and haplotype sharing as well as established methods4,8-10, we show that Paleo-Eskimo-related admixture is ubiquitous among populations speaking Na-Dene and Eskimo-Aleut languages. We develop a comprehensive model for the Holocene peopling events of Chukotka and North America, and show that several key migrations connected to the origin of the Na-Dene peoples, the peopling of the Aleutian Islands, and the spread of Yup’ik and Inuit across the Arctic region are genetically linked to a single Siberian source related to Paleo-Eskimos.Publication Ancient West African Foragers in the Context of African Population History(Springer Science and Business Media LLC, 2020-01) Lipson, Mark; Rohland-Pinello, Nadin; Lawson, Ann; Lavachery, Philippe; Mindzie, Christophe Mbida; Orban, Rosine; Semal, Patrick; Van Neer, Wim; Veeramah, Krishna R.; Kennett, Douglas J.; Patterson, Nick; Hellenthal, Garrett; Lalueza-Fox, Carles; MacEachern, Scott; Prendergast, Mary E.; Reich, David; Ribot, Isabelle; Mallick, Swapan; Olalde, Inigo; Adamski, Nicole; Broomandkhoshbacht, Nadin; López, Saloa; Oppenheimer, Jonas; Stewardson, Kristin; Asombang, Raymond; Bocherens, Herve; Bradman, Neil; Culleton, Brendan; Cornelissen, Els; Crevecoeur, Isabelle; de Maret, Pierre; Fomine, Forka Leypey Mathew; Sawchuk, Elizabeth; Thomas, MarkWe generated genome-wide DNA data from four children buried roughly 8000 and 3000 years ago at Shum Laka (Cameroon), one of the earliest archaeological sites within the probable homeland of Bantu languages. One individual carried the deeply divergent Y chromosome haplogroup A00, which is found today almost exclusively in the same region. However, all four individuals’ genome-wide ancestry profiles are most similar to West-Central African hunter-gatherers, implying that present-day populations in western Cameroon, as well as Bantu speakers across the continent, are not descended substantially from the population represented by these four people. We infer an Africa-wide phylogeny that features widespread admixture and three prominent radiations, including one giving rise to at least four major lineages deep in the history of modern humans.Publication Entwined African and Asian Genetic Roots of Medieval Peoples of the Swahili Coast(SpringerNature, 2023-03-29) Brielle, Esther; Fleisher, Jeffrey; Wynne-Jones, Stephanie; Sirak, Kendra; Broomandkhoshbacht, Nasreen; Callan, Kimberly; Curtis, Elizabeth; Iliev, Lora; Lawson, Ann; Oppenheimer, Jonas; Qiu, Lijun; Stewardson, Kristin; Workman, James; Zalzala, Fatma; Ayodo, George; Gidna, Agness; Kabiru, Angela; Kwekason, Amandus; Mabulla, Audax Z. P.; Manthi, Fredrick; Ndiema, Emmanuel; Ogola, Christine; Sawchuk, Elizabeth; Al-Gazali, Lihadh; Ali, Bassam; Ben-Salem, Salem; Letellier, Thierry; Pierron, Denis; Radimilahy, Chantal; Rakotoarisoa, Jean-Aimé; Raaum, Ryan L.; Culleton, Brendan J.; Mallick, Swapan; Rohland-Pinello, Nadin; Patterson, Nick; Mwenje, Mohammed Ali; Ahmed, Khalfan Bini; Mohamed, Mohamed Mchulla; Williams, Sloan R.; Monge, Janet M.; Kusimba, Sibel; Prendergast, Mary; Reich, David; Kusimba, ChapurukhaThe urban peoples of the Swahili coast traded across eastern Africa and the Indian Ocean and were among the first sub-Saharan practitioners of Islam [1, 2]. The extent to which these early interactions between Africans and non-Africans were accompanied by genetic exchange remains unknown. We report ancient DNA data for 80 individuals from six medieval and early modern (1250-1800 CE) coastal towns and an inland town postdating 1650 CE. Many coastal individuals had over half their DNA from primarily female African ancestors, with large proportions and occasionally more than half from Asian ancestors. The Asian ancestry included both Persian and Indian-associated components, with eighty to ninety percent from Persian males. Peoples of African and Asian origins began to mix by about 1000 CE, coinciding with large-scale adoption of Islam. Before about 1500 CE, the Southwest Asian ancestry was mainly Persian-related, consistent with the narrative of the Kilwa Chronicle, the oldest history told by people of the Swahili coast [3]. After this time, the sources became increasingly Arabian, consistent with evidence of growing interactions with southern Arabia [4]. Subsequent interactions with Asians and Africans further changed the ancestry of Swahili coast people relative to the medieval individuals whose DNA we sequenced.