Evolution of Phenotypic Variance Provides Insights into the Genetic Basis of Adaptation. [PDF]
Genome Biol EvolMost traits are polygenic, and the contributing loci can be identified by genome-wide association studies. The genetic basis of adaptation (adaptive architecture) is, however, difficult to characterize. Here, we propose to study the adaptive architecture
Lai WY +3 more
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A guide to using a multiple-matrix animal model to disentangle genetic and nongenetic causes of phenotypic variance. [PDF]
PLoS One, 2018 Non-genetic influences on phenotypic traits can affect our interpretation of genetic variance and the evolutionary potential of populations to respond to selection, with consequences for our ability to predict the outcomes of selection.
Thomson CE +3 more
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Cellular plasticity facilitates phenotypic change in a dominant coral’s Symbiodiniaceae assemblage
Frontiers in Ecology and Evolution, 2023 Coral-associated dinoflagellates (Symbiodiniaceae) are photosynthetic endosymbionts that influence coral acclimation, as indicated by photo-endosymbiotic phenotypic variance across different environmental conditions.
Colin J. Anthony +3 more
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Evolution of phenotypic variance in response to a novel hot environment [PDF]
Molecular Ecology, 2021 Abstract Shifts in trait means are widely considered as evidence for adaptive responses, but the impact on phenotypic variance remains largely unexplored. Classic quantitative genetics provides a theoretical framework to predict how selection on phenotypic mean affects the variance. In addition to this indirect effect,
Wei‐Yun Lai, Christian Schlötterer
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The effect of selection on the phenotypic variance. [PDF]
Genetics, 1993 Abstract We consider the within-generation changes of phenotypic variance caused by selection w(x) which acts on a quantitative trait x. If before selection the trait has Gaussian distribution, its variance decreases if the second derivative of the logarithm of w(x) is negative for all x, while if it is positive for all x, the variance ...
E E, Shnol, A S, Kondrashov
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Differential evolvability along lines of least resistance of upper and lower molars in island house mice. [PDF]
PLoS ONE, 2011 Variation within a population is a key feature in evolution, because it can increase or impede response to selection, depending on whether or not the intrapopulational variance is correlated to the change under selection.
Sabrina Renaud +2 more
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EVOLUTION OF PHENOTYPIC VARIANCE [PDF]
Evolution, 1987 A cornerstone of evolutionary theory is that the phenotypic variance of a population may be partitioned into genetic and environmental (nonheritable) components. The traditional motivation for this distinction is that the rate of evolution under natural selection depends on the (relative) magnitudes of certain genetic components of variance.
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Genetic heterogeneity of residual variance in broiler chickens [PDF]
, 2006 Aims were to estimate the extent of genetic heterogeneity in environmental variance. Data comprised 99 535 records of 35-day body weights from broiler chickens reared in a controlled environment.
Rowe Suzanne J +14 more
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The Evolution of Phenotypic Variance with Iteroparity [PDF]
Evolution, 1989 Modele d'evolution de la variance phenotypique en fonction d'un environnement temporellement variable, effet de la survie parentale et de leur reproduction plus d'une fois dans le cycle ...
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Estimation of genetic variation in residual variance in female and male broiler chickens [PDF]
, 2008 In breeding programs, robustness of animals and uniformity of end product can be improved by exploiting genetic variation in residual variance. Residual variance can be defined as environmental variance after accounting for all identifiable effects.
Mulder, H. A. +6 more
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