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Quantitative Genetics in the Wild$
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Anne Charmantier, Dany Garant, and Loeske E. B. Kruuk

Print publication date: 2014

Print ISBN-13: 9780199674237

Published to Oxford Scholarship Online: August 2014

DOI: 10.1093/acprof:oso/9780199674237.001.0001

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Epigenetic processes and genetic architecture in character origination and evolution

Epigenetic processes and genetic architecture in character origination and evolution

(p.177) Chapter 11 Epigenetic processes and genetic architecture in character origination and evolution
Quantitative Genetics in the Wild

Alexander V. Badyaev

J. Bruce Walsh

Oxford University Press

The complexity of biological systems often prevents the construction of deterministic framework for the relationship between genotypes and phenotypes in development and evolution. The void is filled by the field of epigenetics that studies properties of emergent, self-regulatory, and compensatory interactions that arise above the level of the gene, but are not directly predictable from the intrinsic properties of either phenotype or genotype. Although these interactions are ubiquitous in the development and functioning of phenotypes, their imprint on the evolution of genetic architecture is unclear. This chapter particularly addresses the contribution of epigenetic developmental dynamics to the maintenance of multivariate genetic variation in complex traits that are subject to strong natural selection. The chapter brings together geometric and developmental perspectives to understanding the evolution of genetic architecture that reconciles precise adaptation, evolutionary diversification, and environmentally contingent developmental variation.

Keywords:   development, epigenetics, complex traits, evolution of genetic architecture, developmental variation

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