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In paleoanthropology, the recent African origin of modern humans or the " Out of Africa " theory ( OOA) [a] is the most widely accepted [1] [2] [3] model of the geographic origin and early migration of anatomically modern humans ( Homo sapiens ).
As a result, a number of different theories have been provided to explain the spread of humanity. One of the most important theories in this area is the Out of Africa theory. This theory states that all humans originated from Africa and that we subsequently migrated out of the continent over time.
It advances and empirically establishes the hypothesis that, in the course of the exodus of Homo sapiens out of Africa, variation in migratory distance from the cradle of humankind in East Africa to various settlements across the globe affected genetic diversity and has had a long-lasting hump-shaped effect on the pattern of comparative ...
- Quamrul Ashraf, Oded Galor
- 10.1257/aer.103.1.1
- 2013
- 2013/02
8 de may. de 2013 · The multiregional hypothesis states that independent multiple origins (Model D) or shared multiregional evolution with continuous gene flow between continental populations (Model C) occurred in the...
- Development of The Hypothesis
- The Genetic Foundations
- Alternatives: The Role of Africa
- Racial Implications
- Status of The Out of Africa Hypothesis
- Bibliography
The Out of Africa hypothesis is sometimes dubbed “Out of Africa 2” because it is not the first migration of Homo out of Africa. It is well accepted that the hominid lineage (the unique human lineage since divergence from the last common ancestor with chimpanzees) evolved in Africa, and for two-thirds of its 6-million-year history was an exclusively...
The Out of Africa hypothesis, the theory of a recent uniqueAfrican origin for the modern human species, was supported by early interpretations of the variation of mtDNA (Cann, Stoneking, and Wilson 1987; Stoneking and Cann 1989). Advances in gene sequencing technology in the 1980s provided the techniques to sequence the mitochondrial genome, and Re...
Much of the current genetic evidence is incompatible with the Out of Africa scenario because it does not reflect a bottleneck associated with recent speciation. While there are a number of nuclear loci that do fit the hypothesis (i.e., autosomal loci with roots four times as deep as the mtDNA and loci on the nonrecombining Y), the rate of discovery...
Race is intricately involved in human origin theories because these theories address the origin and nature of human biological variation. For many historical reasons, and perhaps some psychological ones, race impacts our understanding of human variation in a circular way: Folk (or social) understandings of variation (race) influence science, and co...
This entry has explored the relationship between the concept of race and evolutionary theories of the origin of modern humans, in particular the Out of Africa hypothesis. It is ironic that the Out of Africa theory, while recently promoted as proof of the “brotherhood of man,” inadvertently undermines this important concept because the assumptions t...
Brace, C. L. 1981. “Tales of the Phylogenetic Woods: The Evolution and Significance of Evolutionary Trees.” American Journal of Physical Anthropology56 (4): 411–429. Bräuer, G. 1978. “The Morphological Differentiation of Anatomically Modern Man in Africa, with Special Regard to Recent Finds from East Africa.” Zeitschrift für Morphologie und Anthrop...
18 de jul. de 2007 · The new data support the single origin, or "out of Africa" theory for anatomically modern humans, which says that these early humans colonized the planet after spreading out of the continent...
19 de jul. de 2019 · The Out of Africa (OOA), or African replacement, hypothesis is a well-supported theory. It argues that every living human being is descended from a small group of Homo sapiens (abbreviated Hss) individuals in Africa, who then dispersed into the wider world, meeting and displacing earlier forms such as Neanderthals and Denisovans.
