Document Type
Article
Publication Date
12-6-2017
Publication Title
Nature Communications
Volume
8
Issue
1970
Pages
1-12
Abstract
Robustness to perturbation is a fundamental feature of complex organisms. Mutations are the raw material for evolution, yet robustness to their effects is required for species survival. The mechanisms that produce robustness are poorly understood. Nonlinearities are a ubiquitous feature of development that may link variation in development to phenotypic robustness. Here, we manipulate the gene dosage of a signaling molecule, Fgf8, a critical regulator of vertebrate development. We demonstrate that variation in Fgf8 expression has a nonlinear relationship to phenotypic variation, predicting levels of robustness among genotypes. Differences in robustness are not due to gene expression variance or dysregulation, but emerge from the nonlinearity of the genotype–phenotype curve. In this instance, embedded features of development explain robustness differences. How such features vary in natural populations and relate to genetic variation are key questions for unraveling the origin and evolvability of this feature of organismal development.
Recommended Citation
Green, Rebecca M.; Fish, Jennifer L.; Young, Nathan M.; Smith, Francis J.; Roberts, Benjamin; Dolan, Katie; Choi, Irene; Leach, Courtney L.; Gordon, Paul; Cheverud, James M.; Roseman, Charles C.; Williams, Trevor J.; Marcucio, Ralph S.; and Hallgrímsson, Benedikt. Developmental Nonlinearity Drives Phenotypic Robustness. Nature Communications, 8, 1970: 1-12, 2017. Retrieved from Loyola eCommons, Biology: Faculty Publications and Other Works, http://dx.doi.org/10.1038/s41467-017-02037-7
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Copyright Statement
© The Authors 2017
Comments
Author Posting. © The Authors 2017. This article is posted here by permission of James M. Cheverud for personal use, not for redistribution. The article was published in Nature Communications, vol. 8, no. 1970, 2017, https://doi.org/10.1038/s41467-017-02037-7