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Mitonuclear Ecology$
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Geoffrey E. Hill

Print publication date: 2019

Print ISBN-13: 9780198818250

Published to Oxford Scholarship Online: June 2019

DOI: 10.1093/oso/9780198818250.001.0001

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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 20 October 2021

Coevolution, co-transmission, and conflict

Coevolution, co-transmission, and conflict

(p.77) 4 Coevolution, co-transmission, and conflict
Mitonuclear Ecology

Geoffrey E. Hill

Oxford University Press

Mitochondrial genes and nuclear genes are replicated and transmitted across generations as physically separated units. The extent to which these autonomous genomes are co-transmitted depends on the position of nuclear genes on autosomes versus sex chromosomes, and co-transmission has important implications for mitonuclear coevolution and conflict. Mitonuclear co-transmission, coadaptation, and coevolution are potentially very important for understanding fundamental evolutionary phenomena like Haldane’s rule. In addition, because mitochondrial genomes are transmitted strictly through maternal lines in most eukaryotes, selection on mitochondrial genes can favor female fitness over male fitness, leading to mother’s curse. The chapter assesses and draws conclusions about the relative importance of mitonuclear coadaptation and conflict in the evolution of eukaryotic lineages.

Keywords:   Co-transmission, Hill–Robertson effects, Muller’s ratchet, mutational erosion, sex linkage, mother’s curse, genomic conflict, nuclear restorer genes, endosymbionts

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