STABILIZING SELECTION AND THE COMPARATIVE ANALYSIS OF ADAPTATION
- T. F. Hansen
- BiologyEvolution; international journal of organic…
- 1 October 1997
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.
Phylogenies and the Comparative Method: A General Approach to Incorporating Phylogenetic Information into the Analysis of Interspecific Data
- E. Martins, T. F. Hansen
- BiologyAmerican Naturalist
- 1 April 1997
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.
A Comparative Method for Studying Adaptation to a Randomly Evolving Environment
- T. F. Hansen, J. Pienaar, S. Orzack
- BiologyEvolution; international journal of organic…
- 1 August 2008
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.
Heritability is not Evolvability
- T. F. Hansen, C. Pélabon, D. Houle
- BiologyEvolutionary biology
- 21 June 2011
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.
The Evolution of Genetic Architecture
- T. F. Hansen
- Biology
- 7 November 2006
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.
Is modularity necessary for evolvability? Remarks on the relationship between pleiotropy and evolvability.
- T. F. Hansen
- BiologyBio Systems
- 1 May 2003
PERSPECTIVE:EVOLUTION AND DETECTION OF GENETIC ROBUSTNESS
- J. D. de Visser, J. Hermisson, M. Whitlock
- BiologyEvolution; international journal of organic…
- 1 September 2003
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.
The million-year wait for macroevolutionary bursts
- J. Uyeda, T. F. Hansen, S. J. Arnold, J. Pienaar
- Environmental Science, BiologyProceedings of the National Academy of Sciences
- 23 August 2011
It is suggested that these rare bursts of phenotypic change reflect permanent changes in adaptive zones, whereas the short-term fluctuations represent local variations in niche optima due to restricted environmental variation within a stable adaptive zone.
Seasonality, density dependence, and population cycles in Hokkaido voles
- N. Stenseth, H. Viljugrein, Fredrik Glöckner
- Environmental ScienceProceedings of the National Academy of Sciences…
- 22 September 2003
It is demonstrated that seasonality plays a key role in determining whether a vole population is cyclic or not, so that populations experiencing longer winters tend to have a stronger delayed density-dependence and, as a result, exhibit regular density cycles.
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