The Ancient Beringian (AB) is a human archaeogenetic lineage, based on the genome of an infant found at the Upward Sun River site (dubbed USR1), dated to 11,500 years ago. [1] The AB lineage diverged from the Ancestral Native American (ANA) lineage about 20,000 years ago. The ANA lineage was estimated as having been formed between 20,000 and 25,000 years ago by a mixture of East Asian (~65%) and Ancient North Eurasian (~35%) lineages, consistent with the model of the peopling of the Americas via Beringia during the Last Glacial Maximum. [2] [3] [4]
The Ancient Beringian lineage is extinct, and is not found as a contribution to modern indigenous lineages in Alaska. The 2018 study suggests that the AB lineage was replaced by or absorbed in a back-migration of "North Native American" (NNA) to Alaska. The modern Athabaskan populations are derived from an admixture of this NNA back-migration and a Paleo-Siberian (Early Paleo-Eskimo) lineage before about 2,500 years ago. [5]
The discovery was made from archaeogenetic analyses on the remains of two female infants discovered in 2013 at the Upward Sun River site (USR). [1] The USR site is affiliated with the Denali Complex, a dispersed archaeological culture of the American Arctic. The genomic analysis of nuclear DNA of the older of the two infants (USR1) was done at the Centre for Geogenetics at the University of Copenhagen's Natural History Museum of Denmark. Results from the team's genetic analysis were published in January 2018 in the scientific journal Nature . The analysis compared the infant's genomes with both ancient and contemporary genomes. The results suggested that the pre-"Ancestral Native American" lineage derived from the East Asian lineage after 36 kya, with gene flow until about 25 kya. During 25–20 kya, this lineage was later substantially mixed with the Ancient North Eurasian lineage (~35%), who are described as the "result of a palaeolithic admixture" between ancient West Eurasians and ancient East Eurasians, [6] to form the "Ancestral Native American" lineage by 20 kya. The "Ancient Beringian" (AB) lineage derived from ANA and persisted without significant admixture in Alaska until the time of USR1, some 8,000 years later. The lineage of other Paleo-Indians diverged from AB at ca. 20–18 kya, and further divided into "North Native American" (NNA) and "South Native American" lineages between 17.5 kya and 14.6 kya, reflecting the dispersal associated with the early peopling of the Americas. [1] [3] [4]
Beringia is defined today as the land and maritime area bounded on the west by the Lena River in Russia; on the east by the Mackenzie River in Canada; on the north by 72° north latitude in the Chukchi Sea; and on the south by the tip of the Kamchatka Peninsula. It includes the Chukchi Sea, the Bering Sea, the Bering Strait, the Chukchi and Kamchatka Peninsulas in Russia as well as Alaska in the United States and the Yukon in Canada.
The Paleo-Eskimo meaning "old Eskimos", also known as, pre-Thule or pre-Inuit, were the peoples who inhabited the Arctic region from Chukotka in present-day Russia across North America to Greenland before the arrival of the modern Inuit (Eskimo) and related cultures. The first known Paleo-Eskimo cultures developed by 3900 to 3600 BCE, but were gradually displaced in most of the region, with the last one, the Dorset culture, disappearing around 1500 CE.
Genetics and archaeogenetics of South Asia is the study of the genetics and archaeogenetics of the ethnic groups of South Asia. It aims at uncovering these groups' genetic histories. The geographic position of the Indian subcontinent makes its biodiversity important for the study of the early dispersal of anatomically modern humans across Asia.
The Paleo-Arctic Tradition is the name given by archaeologists to the cultural tradition of the earliest well-documented human occupants of the North American Arctic, which date from the period 8000–5000 BC. The tradition covers Alaska, and expands far into the east, west, and the Southwest Yukon Territory of Canada.
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Fuegians are the indigenous inhabitants of Tierra del Fuego, at the southern tip of South America. The name has been credited to Captain James Weddell, who supposedly created the term in 1822.
The Trail Creek Caves are a group of twelve caves found within the Bering Land Bridge National Preserve on the Seward Peninsula of the U.S. state of Alaska. This is a significant archeological site due to the discovery of several artifacts of ancient hunters. These included stone tools and bone fragments dated to 8,500 years or earlier. The caves were discovered in 1928 by Taylor Moto and Alfred Karmun, locals from Deering, Alaska. Geologist David Hopkins tested the site in 1948. This location was first excavated in from 1949-1950 by Danish archeologist Helge Larsen. The caves are located along Trail Creek 65°47′28″N163°24′58″W near its mouth at Cottonwood Creek in the Northwest Arctic Borough.
The genetic history of the Indigenous peoples of the Americas is divided into two distinct periods: the initial peopling of the Americas from about 20,000 to 14,000 years ago, and European contact, after about 500 years ago. The first period of the genetic history of Indigenous Americans is the determinant factor for the number of genetic lineages, zygosity mutations, and founding haplotypes present in today's Indigenous American populations.
Haplogroup Q-L54 is a subclade of Y-DNA haplogroup Q-L53. Q1a3a-L54 is defined by the presence of the L54 Single Nucleotide Polymorphism (SNP).
Anzick-1 was a young Paleoindian child whose remains were found in south central Montana, United States, in 1968. He has been dated to 12,990–12,840 years Before Present. The child was found with more than 115 tools made of stone and antlers and dusted with red ocher, suggesting a deliberate burial. Anzick-1 is the only human whose remains are associated with the Clovis culture, and is the first ancient Native American genome to be fully sequenced.
The Upward Sun River site, or Xaasaa Na’, is a Late Pleistocene archaeological site associated with the Paleo-Arctic tradition, located in the Tanana River Valley, Alaska. Dated to around 11,500 BP, Upward Sun River is the site of the oldest human remains discovered on the American side of Beringia. The site was first discovered in 2006.
A ghost population is a population that has been inferred through using statistical techniques.
In archaeogenetics, the term Ancient North Eurasian (ANE) is the name given to an ancestral component that represents the lineage of the people of the Mal'ta–Buret' culture and populations closely related to them, such as the Upper Paleolithic individuals from Afontova Gora in Siberia. Genetic studies also revealed that the ANE are closely related to the remains of the preceding Yana Culture, which were dubbed as 'Ancient North Siberians' (ANS). Ancient North Eurasians are predominantly of West Eurasian ancestry who arrived in Siberia via the "northern route", but also derive a significant amount of their ancestry from an East Eurasian source, having arrived to Siberia via the "southern route".
The peopling of the Americas began when Paleolithic hunter-gatherers (Paleo-Indians) entered North America from the North Asian Mammoth steppe via the Beringia land bridge, which had formed between northeastern Siberia and western Alaska due to the lowering of sea level during the Last Glacial Maximum. These populations expanded south of the Laurentide Ice Sheet and spread rapidly southward, occupying both North and South America, by 12,000 to 14,000 years ago. The earliest populations in the Americas, before roughly 10,000 years ago, are known as Paleo-Indians. Indigenous peoples of the Americas have been linked to Siberian populations by proposed linguistic factors, the distribution of blood types, and in genetic composition as reflected by molecular data, such as DNA.
This article summarizes the genetic makeup and population history of East Asian peoples and their connection to genetically related populations such as Southeast Asians and North Asians, as well as Oceanians, and partly, Central Asians, South Asians, and Native Americans. They are collectively referred to as "East Eurasians" in population genomics.
The genetic history of Africa summarizes the genetic makeup and population history of African populations in Africa, composed of the overall genetic history, including the regional genetic histories of North Africa, West Africa, East Africa, Central Africa, and Southern Africa, as well as the recent origin of modern humans in Africa. The Sahara served as a trans-regional passageway and place of dwelling for people in Africa during various humid phases and periods throughout the history of Africa.
In archaeogenetics, the term Ancient Northeast Asian (ANA), also known as Amur ancestry, is the name given to an ancestral component that represents the lineage of the hunter-gatherer people of the 7th-4th millennia before present, in far-eastern Siberia, Mongolia and the Baikal regions. They are inferred to have diverged from Ancient East Asians about 24kya ago, and are represented by several ancient human specimens found in archaeological excavations east of the Altai Mountains. They are a sub-group of the Ancient Northern East Asians (ANEA).
In archaeogenetics, the term Ancient Paleo-Siberian is the name given to an ancestral component that represents the lineage of the hunter-gatherer people of the 15th-10th millennia before present, in northern and northeastern Siberia. The Ancient Paleo-Siberian population is thought to have arisen from an Ancient East Asian lineage, which diverged from other East Asian populations sometimes between 26kya to 36kya, and merged with Ancient North Eurasians (ANE) sometimes between 20kya to 25kya. The ANE themselves are described as the "result of a palaeolithic admixture" between ancient West Eurasians and ancient East Eurasians. The source for the East Asian component among Ancient Paleo-Siberians is to date best represented by Ancient Northern East Asian populations from the Amur region older than 13,000 years, such as AR19K and AR14K, and before the Devil's Cave Ancient Northeast Asian specimens.
In archaeogenetics, the term Ancient Northern East Asian (ANEA), also known as Northern East Asian (NEA), is used to summarize the related ancestral components that represent the Ancient Northern East Asian peoples, extending from the Baikal region to the Yellow River and the Qinling-Huaihe Line in present-day central China. They are inferred to have diverged from Ancient Southern East Asians (ASEA) around 20,000 to 26,000 BCE.
The term Ancient East Eurasian, alternatively also known as East Eurasian or Eastern Eurasian, is used in population genomics to describe the genetic ancestry and phylogenetic relationship of diverse populations primarily living in the Asia-Pacific region, belonging to the "Eastern Eurasian clade" of human genetic diversity, and which can be associated with the Initial Upper Paleolithic (IUP) wave, following the Out of Africa migration (>60kya).