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Microorganisms evolve rapidly due to their large population sizes and short generation times, often exhibiting measurable changes within days under laboratory conditions. Natural selection acts on standing genetic variation, enabling the retention and amplification of beneficial traits that confer fitness advantages in changing environments.Adaptive Pigment Regulation in RhodobacterIn Rhodobacter, a genus of purple non-sulfur bacteria, light-harvesting pigments such as bacteriochlorophyll and...
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Microinjection for Transgenesis and Genome Editing in Threespine Sticklebacks
08:51

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Published on: May 13, 2016

Evolution of correlated characters.

T Price1, T Langen

  • 1Trevor Price and Tom Langen are at the Dept of Biology, 0116, University of California at San Diego, La Jolla, CA 92093, USA.

Trends in Ecology & Evolution
|January 18, 2011
PubMed
Summary
This summary is machine-generated.

Genetic correlations mean selection on one trait impacts others. Correlated responses can drive evolution of seemingly neutral or maladaptive traits, influencing organism-wide evolutionary dynamics.

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Area of Science:

  • Evolutionary Biology
  • Quantitative Genetics

Background:

  • Traits are often genetically correlated, meaning selection on one trait induces changes in others.
  • Correlated responses can influence the evolution of traits with varying adaptive significance.

Purpose of the Study:

  • To highlight the evolutionary importance of correlated responses.
  • To explore how correlated responses can shape trait evolution, including behaviors and fitness-related traits like brain size.

Main Methods:

  • Review of recent comparative studies.
  • Theoretical consideration of selection pressures and correlated effects.

Main Results:

  • Correlated responses can drive the evolution of traits with little or negative adaptive value.
  • Major fitness traits, such as brain size, can evolve solely through correlated response.
  • Traits appearing static may have undergone selection to counteract correlated evolution.

Conclusions:

  • Correlated responses are a significant factor in evolutionary processes.
  • Considering the organism holistically is crucial for understanding trait evolution.
  • This perspective moves beyond analyzing traits in isolation to a more integrated view.