Agriculture and Migrations

Agriculture and Migrations - migrations over the temporary...

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Agriculture and Migrations Since the evolution of H. erectus , migrations have been a fact of human existence, helping to spread genetic diversity as well as technological innovation. The most recent innovations have not been physical, but rather cultural. The Neolithic transition, about 10,000 years ago, involved the change from hunter- gatherer societies to agricultural ones based on cultivation of plants and domesticated animals. Evidence suggests this began in the Middle East and spread outward via migrations. Genetic studies suggest agriculture spread by the migration of farmers into hunter- gatherer societies. This would produce a genetic blurring as the farmers interbred with the indigenous peoples, a pattern supported by genetics. Most anthropologists agree that the New World was populated by a series of three
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Unformatted text preview: migrations over the temporary land connection between Asia and North America. The immigrants spread southward, eventually reaching Tierra del Fuego in the southernmost part of South America. 1. Anthropological and linguistic studies find three groups of peoples: 2. The Amerinds, who spread across North and South America 3. The Na-Denes, who occupied the northwestern region of North America 4. The Eskaleuts, Eskimo and Aleut peoples who live in the far north. Mitochondrial DNA studies find four distinct groups descended from peoples of Siberia. Amerind mtDNA suggests two waves of migration (one perhaps as old as 21-42 thousand years ago). The genetic model confirms the accepted ideas about human migration into the Americas and suggests a possible fourth wave....
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