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Accounting for genetic interactions improves modeling of individual quantitative trait phenotypes in yeast
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Biochemistry and Microbiology. (Örjan Carlborg)ORCID iD: 0000-0002-7451-9222
(English)Manuscript (preprint) (Other academic)
Abstract [en]

Experiments in model organisms report abundant genetic interactions underlying biologically important traits, whereas quantitative genetics theory predicts, and data support, that most genetic variance in populations is additive. Here we describe networks of capacitating genetic interactions that contribute to quantitative trait variation in a large yeast intercross population. The additive variance explained by individual loci in a network is highly dependent on the allele frequencies of the interacting loci. Modeling of phenotypes for multi-locus genotype classes in the epistatic networks is often improved by accounting for the interactions. We discuss the implications of these results for attempts to dissect genetic architectures and to predict individual phenotypes and long-term responses to selection.

Keyword [en]
genetic interactions, epistasis, yeast, QTL, epistatic networks
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URN: urn:nbn:se:uu:diva-307821DOI: 10.1101/059485OAI: oai:DiVA.org:uu-307821DiVA: diva2:1048703
Available from: 2016-11-22 Created: 2016-11-22 Last updated: 2016-11-30
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Forsberg, Simon K G
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