An example of Demic diffusion: ancient European Neolithic farmers were genetically closest to ancient Near-Eastern/Anatolian populations. Genetic matrilineal distances between European Neolithic Linear Pottery Culture populations (5,500–4,900 calibrated BC) and modern Western Eurasian populations.[1]
In its original formulation, the demic diffusion model includes three phases: (1) population growth, prompted by new available resources as in the case of early farmers, and/or other technological developments; (2) a dispersal into regions with lower population density; (3) a limited initial admixture[clarification needed] with the people encountered in the process.
Evidence
Theoretical work by Cavalli-Sforza showed that if admixture between expanding farmers and previously-resident groups of hunters and gatherers was not immediate, the process would result in the establishment of broad genetic gradients. Because broad gradients, spanning much of Europe from southeast to northwest, were identified in empirical genetic studies by Cavalli-Sforza, Robert R. Sokal, Guido Barbujani, Lounès Chikhi and others, it seemed likely that the spread of agriculture into Europe occurred by the expansion and the spread of agriculturists, who possibly originated in the Fertile Crescent of the Near East.[2] That is referred to as the Neolithic demic diffusion model.
^Consortium, the Genographic; Cooper, Alan (9 November 2010). "Ancient DNA from European Early Neolithic Farmers Reveals Their Near Eastern Affinities". PLOS Biology. 8 (11): e1000536. doi:10.1371/journal.pbio.1000536. ISSN 1545-7885. PMC2976717. PMID 21085689.
^Chicki, L; Nichols, RA; Barbujani, G; Beaumont, MA. 2002. Y genetic data support the Neolithic demic diffusion model. Proc. Natl. Acad. Sci. 99(17): 11008-11013.
^C. Loring Brace, Noriko Seguchi, Conrad B. Quintyn, Sherry C. Fox, A. Russell Nelson, Sotiris K. Manolis, and Pan Qifeng, "The questionable contribution of the Neolithic and the Bronze Age to European craniofacial form," in Proceedings of the National Academy of Sciences of the United States (Jan. 3, 2006). Vol. 103, No. 1, pp. 242-247. [1]doi:10.1073/pnas.0509801102
^F. X. Ricaut, M. Waelkens, "Cranial Discrete Traits in a Byzantine Population and Eastern Mediterranean Population Movements," in Human Biology, Wayne State University Press (Aug. 2008). Vol. 80, Issue 5, pp. 535-564. [2]doi:10.3378/1534-6617-80.5.535
^M. Zvelebil, in Hunters in Transition: Mesolithic Societies and the Transition to Farming, M. Zvelebil (editor), Cambridge University Press: Cambridge, UK (1986) pp. 5-15, 167–188.
^P. Bellwood, First Farmers: The Origins of Agricultural Societies, Blackwell: Malden, MA (2005).
^M. Dokládal, J. Brožek, Curr. Anthropol. 2 (1961) pp. 455–477.
^O. Bar-Yosef, Evol. Anthropol. 6 (1998) pp. 159–177.
Origin, Diffusion, and Differentiation of Y-Chromosome Haplogroups E and J: Inferences on the Neolithization of Europe and Later Migratory Events in the Mediterranean Area, 2004
Y genetic data support the Neolithic demic diffusion model, Chikhi 2002.
Paleolithic and Neolithic lineages in the European mitochondrial gene pool, Cavalli-Sforza 1997.
Clines of nuclear DNA markers suggest a largely Neolithic ancestry of the European gene, Chikhi 1997.
January 15, 2023
demic, diffusion, opposed, trans, cultural, diffusion, demographic, term, referring, migratory, model, developed, luigi, luca, cavalli, sforza, population, diffusion, into, across, area, that, been, previously, uninhabited, that, group, possibly, necessarily, . Demic diffusion as opposed to trans cultural diffusion is a demographic term referring to a migratory model developed by Luigi Luca Cavalli Sforza of population diffusion into and across an area that had been previously uninhabited by that group and possibly but not necessarily displacing replacing or intermixing with an existing population such as has been suggested for the spread of agriculture across Neolithic Europe and several other Landnahme events An example of Demic diffusion ancient European Neolithic farmers were genetically closest to ancient Near Eastern Anatolian populations Genetic matrilineal distances between European Neolithic Linear Pottery Culture populations 5 500 4 900 calibrated BC and modern Western Eurasian populations 1 In its original formulation the demic diffusion model includes three phases 1 population growth prompted by new available resources as in the case of early farmers and or other technological developments 2 a dispersal into regions with lower population density 3 a limited initial admixture clarification needed with the people encountered in the process Evidence EditTheoretical work by Cavalli Sforza showed that if admixture between expanding farmers and previously resident groups of hunters and gatherers was not immediate the process would result in the establishment of broad genetic gradients Because broad gradients spanning much of Europe from southeast to northwest were identified in empirical genetic studies by Cavalli Sforza Robert R Sokal Guido Barbujani Lounes Chikhi and others it seemed likely that the spread of agriculture into Europe occurred by the expansion and the spread of agriculturists who possibly originated in the Fertile Crescent of the Near East 2 That is referred to as the Neolithic demic diffusion model Craniometric 3 4 and archaeological 5 6 7 8 9 studies have also arrived at the same conclusion References Edit Consortium the Genographic Cooper Alan 9 November 2010 Ancient DNA from European Early Neolithic Farmers Reveals Their Near Eastern Affinities PLOS Biology 8 11 e1000536 doi 10 1371 journal pbio 1000536 ISSN 1545 7885 PMC 2976717 PMID 21085689 Chicki L Nichols RA Barbujani G Beaumont MA 2002 Y genetic data support the Neolithic demic diffusion model Proc Natl Acad Sci 99 17 11008 11013 C Loring Brace Noriko Seguchi Conrad B Quintyn Sherry C Fox A Russell Nelson Sotiris K Manolis and Pan Qifeng The questionable contribution of the Neolithic and the Bronze Age to European craniofacial form in Proceedings of the National Academy of Sciences of the United States Jan 3 2006 Vol 103 No 1 pp 242 247 1 doi 10 1073 pnas 0509801102 F X Ricaut M Waelkens Cranial Discrete Traits in a Byzantine Population and Eastern Mediterranean Population Movements in Human Biology Wayne State University Press Aug 2008 Vol 80 Issue 5 pp 535 564 2 doi 10 3378 1534 6617 80 5 535 M Zvelebil in Hunters in Transition Mesolithic Societies and the Transition to Farming M Zvelebil editor Cambridge University Press Cambridge UK 1986 pp 5 15 167 188 P Bellwood First Farmers The Origins of Agricultural Societies Blackwell Malden MA 2005 M Dokladal J Brozek Curr Anthropol 2 1961 pp 455 477 O Bar Yosef Evol Anthropol 6 1998 pp 159 177 M Zvelebil Antiquity 63 1989 pp 379 383 External links EditEstimating the Impact of Prehistoric Admixture on the Genome of Europeans Dupanloup et al 2004 Origin Diffusion and Differentiation of Y Chromosome Haplogroups E and J Inferences on the Neolithization of Europe and Later Migratory Events in the Mediterranean Area 2004 Y genetic data support the Neolithic demic diffusion model Chikhi 2002 Paleolithic and Neolithic lineages in the European mitochondrial gene pool Cavalli Sforza 1997 Clines of nuclear DNA markers suggest a largely Neolithic ancestry of the European gene Chikhi 1997 Retrieved from https en wikipedia org w index php title Demic diffusion amp oldid 1097480761, wikipedia, wiki, book, books, library,
