Results 1 to 10 of about 49,916 (196)

Genome-wide epistasis analysis for Alzheimer’s disease and implications for genetic risk prediction

open access: yesAlzheimer’s Research & Therapy, 2021
Background Single-nucleotide polymorphisms (SNPs) identified by genome-wide association studies only explain part of the heritability of Alzheimer’s disease (AD).
Hui Wang   +4 more
doaj   +1 more source

PERSPECTIVE: SIGN EPISTASIS AND GENETIC COSTRAINT ON EVOLUTIONARY TRAJECTORIES [PDF]

open access: yesEvolution, 2005
Epistasis for fitness means that the selective effect of a mutation is conditional on the genetic background in which it appears. Although epistasis is widely observed in nature, our understanding of its consequences for evolution by natural selection remains incomplete.
Weinreich, Daniel M.   +2 more
openaire   +4 more sources

Weak Epistasis Generally Stabilizes Phenotypes in a Mouse Intercross. [PDF]

open access: yesPLoS Genetics, 2016
The extent and strength of epistasis is commonly unresolved in genetic studies, and observed epistasis is often difficult to interpret in terms of biological consequences or overall genetic architecture. We investigated the prevalence and consequences of
Anna L Tyler   +3 more
doaj   +1 more source

Estimating directional epistasis

open access: yesFrontiers in Genetics, 2014
Epistasis, i.e. the fact that gene effects depend on the genetic background, is a direct consequence of the complexity of genetic architectures. Despite this, most of the models used in evolutionary and quantitative genetics pay scant attention to ...
Arnaud eLE ROUZIC
doaj   +1 more source

Epistasis: obstacle or advantage for mapping complex traits? [PDF]

open access: yesPLoS ONE, 2010
Identification of genetic loci in complex traits has focused largely on one-dimensional genome scans to search for associations between single markers and the phenotype.
Koen J F Verhoeven   +2 more
doaj   +1 more source

Stability-mediated epistasis constrains the evolution of an influenza protein. [PDF]

open access: yes, 2013
John Maynard Smith compared protein evolution to the game where one word is converted into another a single letter at a time, with the constraint that all intermediates are words: WORD→WORE→GORE→GONE→GENE. In this analogy, epistasis constrains evolution,
Bloom, Jesse D   +2 more
core   +1 more source

Genetic Dissection of Cytonuclear Epistasis in Line Crosses [PDF]

open access: yesGenetics, 2007
Abstract Dissection of cytonuclear interactions is fundamentally important for understanding the genetic architecture of complex traits. Here we propose a mating design based on reciprocal crosses and extend the existing QTL mapping method to evaluate the contribution of cytoplasm and QTL × cytoplasm interactions to the phenotypic ...
Zaixiang, Tang   +4 more
openaire   +2 more sources

Pervasive epistasis exposes intramolecular networks in adaptive enzyme evolution

open access: yesNature Communications, 2023
Enzyme evolution is characterized by constant alterations of the intramolecular residue networks supporting their functions. The rewiring of these network interactions can give rise to epistasis.
Karol Buda   +2 more
doaj   +1 more source

Genetic epistasis regulates amyloid deposition in resilient aging [PDF]

open access: yesAlzheimer's & Dementia, 2017
AbstractIntroductionThe brain‐derived neurotrophic factor (BDNF) interacts with important genetic Alzheimer's disease (AD) risk factors. Specifically, variants within the SORL1 gene determine BDNF's ability to reduce amyloid β (Aβ) in vitro. We sought to test whether functional BDNF variation interacts with SORL1 genotypes to influence expression and ...
Felsky, Daniel   +8 more
openaire   +3 more sources

Statistical Modeling of Epistasis and Linkage Decay using Logic Regression [PDF]

open access: yes, 2008
Logic regression has been recognized as a tool that can identify and model non-additive genetic interactions using Boolean logic groups. Logic regression, TASSEL-GLM and SAS-GLM were compared for analytical precision using a previously characterized ...
Jean-Luc Jannink   +4 more
core   +2 more sources

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