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Surprisingly Low Limits of Selection in Plant Domestication

Allaby, RG; Kitchen, J; Fuller, D; (2016) Surprisingly Low Limits of Selection in Plant Domestication. Evolutionary Bioinformatics , 2015 (S2) pp. 41-51. 10.4137/EBO.S33495. Green open access

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Abstract

Current debate concerns the pace at which domesticated plants emerged from cultivated wild populations and how many genes were involved. Using an individual-based model, based on the assumptions of Haldane and Maynard Smith, respectively, we estimate that a surprisingly low number of 50–100 loci are the most that could be under selection in a cultivation regime at the selection strengths observed in the archaeological record. This finding is robust to attempts to rescue populations from extinction through selection from high standing genetic variation, gene flow, and the Maynard Smith-based model of threshold selection. Selective sweeps come at a cost, reducing the capacity of plants to adapt to new environments, which may contribute to the explanation of why selective sweeps have not been detected more frequently and why expansion of the agrarian package during the Neolithic was so frequently associated with collapse.

Type: Article
Title: Surprisingly Low Limits of Selection in Plant Domestication
Open access status: An open access version is available from UCL Discovery
DOI: 10.4137/EBO.S33495
Publisher version: http://dx.doi.org/10.4137/EBO.S33495
Language: English
Additional information: Copyright: © The Authors, Publisher and Licensee Libertas Academica Limited. This is an open-access article distributed under the terms of the Creative Commons CC-BY-NC 3.0 License (https://creativecommons.org/licenses/by-nc/3.0/)
Keywords: domestication, cost of selection, Haldane, Maynard-Smith
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL SLASH
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of SandHS > Institute of Archaeology
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of SandHS > Institute of Archaeology > Institute of Archaeology Gordon Square
URI: https://discovery.ucl.ac.uk/id/eprint/1497180
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