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Evolving Inversions

Review article
Authors R. Faria
Kerstin Johannesson
Roger Butlin
A. M. Westram
Published in Trends in Ecology & Evolution
Volume 34
Issue 3
Pages 239-248
ISSN 0169-5347
Publication year 2019
Published at Department of marine sciences
Pages 239-248
Language en
Links dx.doi.org/10.1016/j.tree.2018.12.0...
Keywords reproductive isolation, local adaptation, chromosome inversions, evolution, recombination, divergence, speciation, in(3r)payne, supergenes, selection
Subject categories Evolutionary Biology, Marine ecology

Abstract

Empirical data suggest that inversions in many species contain genes important for intraspecific divergence and speciation, yet mechanisms of evolution remain unclear. While genes inside an inversion are tightly linked, inversions are not static but evolve separately from the rest of the genome by new mutations, recombination within arrangements, and gene flux between arrangements. Inversion polymorphisms are maintained by different processes, for example, divergent or balancing selection, or a mix of multiple processes. Moreover, the relative roles of selection, drift, mutation, and recombination will change over the lifetime of an inversion and within its area of distribution. We believe inversions are central to the evolution of many species, but we need many more data and new models to understand the complex mechanisms involved.

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