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STABILIZING SELECTION AND THE COMPARATIVE ANALYSIS OF ADAPTATION
  • T. F. Hansen
  • Biology, Medicine
  • Evolution; international journal of organic…
  • 1 October 1997
TLDR
A model of adaptive evolution on a macroevolutionary time scale that includes the maintenance of traits at adaptive optima by stabilizing selection as the dominant evolutionary force is presented. Expand
Phylogenies and the Comparative Method: A General Approach to Incorporating Phylogenetic Information into the Analysis of Interspecific Data
TLDR
A generalized linear model (GLM) is presented for the analysis of comparative data, which can be used to address questions regarding the relationship between traits or between traits and environments, the rate of phenotypic evolution, the degree of phylogenetic effect, and the ancestral state of a character. Expand
Measuring and comparing evolvability and constraint in multivariate characters
TLDR
The Lande equation is used to derive new measures of the ability of a variance matrix to allow or constrain evolution in any direction in phenotype space, and these measures are studied to show how they can be used to interpret and compare variance matrices. Expand
A Comparative Method for Studying Adaptation to a Randomly Evolving Environment
TLDR
It is shown how both evolutionary and optimal regressions, as well as phylogenetic inertia, can be estimated jointly by a comparative method built around an Ornstein–Uhlenbeck model of adaptive evolution. Expand
Heritability is not Evolvability
TLDR
The correlation between heritability and evolvability is essentially zero, and it is argued that this is likely due to inherent positive correlations between the additive variance and other components of phenotypic variance. Expand
The Evolution of Genetic Architecture
TLDR
This work reviews the past decade's developments in incorporating the genotype-phenotype map as a dynamical part of population genetics with emphasis on recent theoretical work on the evolution of genetic architecture and evolvability. Expand
TRANSLATING BETWEEN MICROEVOLUTIONARY PROCESS AND MACROEVOLUTIONARY PATTERNS: THE CORRELATION STRUCTURE OF INTERSPECIFIC DATA
TLDR
It is found that stabilizing selection leads to patterns of exponential decrease of between species covariance with phylogenetic distance, which is different from the usual linear patterns of decrease assumed in most comparative and systematic methods. Expand
COMPARING STRENGTHS OF DIRECTIONAL SELECTION: HOW STRONG IS STRONG?
TLDR
This review of published estimates of directional selection in natural populations using mean‐standardized selection gradients shows that selection is on average 54% as strong as selection on fitness. Expand
PERSPECTIVE:EVOLUTION AND DETECTION OF GENETIC ROBUSTNESS
TLDR
This work focuses on the first kind of robustness—genetic robustness)—and survey three growing avenues of research: measuring genetic robustness in nature and in the laboratory; understanding the evolution of genetic robusts; and exploring the implications of genetic resilientness for future evolution. Expand
Is modularity necessary for evolvability? Remarks on the relationship between pleiotropy and evolvability.
TLDR
The most evolvable genetic architectures may often be those with an intermediate level of integration among characters, and in particular those where pleiotropic effects are variable and able to compensate for each other's constraints. Expand
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