Removal of beneficial insertion effects prevents the long-term persistence of transposable elements within a simulated asexual population.

Butler, Christopher, Bell, Ellen and Taylor, Martin (2020) Removal of beneficial insertion effects prevents the long-term persistence of transposable elements within a simulated asexual population. BMC Genomics. ISSN 1471-2164 (In Press)

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Abstract

Transposable elements (TEs) are significant components of most organism’s genomes, yet the reasons why their abundances vary significantly among species is poorly understood. A recent study has suggested that even in the absence of traditional molecular evolutionary explanations transposon proliferation may occur through a process known as ‘TE engineering’. However, the model developed by the authors used a fixed beneficial TE insertion frequency of 20%, which we believe to be unrealistically high. Reducing this value, while keeping all other parameters identical, prevented TE proliferation. We conclude that the author’s original findings are better explained through the action of positive selection rather than ‘TE engineering’, with beneficial insertion effects remaining important during TE proliferation events.

Item Type: Article
Faculty \ School: Faculty of Science > School of Biological Sciences
Depositing User: LivePure Connector
Date Deposited: 12 Jan 2021 00:54
Last Modified: 12 Jan 2021 00:54
URI: https://ueaeprints.uea.ac.uk/id/eprint/78151
DOI:

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