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Following the Dynamics of Structural Variants in Experimentally Evolved Populations
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Advantageous diversity maintained by balancing selection in humans.

Felix M Key1, João C Teixeira1, Cesare de Filippo1

  • 1Department of Evolutionary Genetics, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany.

Current Opinion in Genetics & Development
|September 1, 2014
PubMed
Summary
This summary is machine-generated.

Balancing selection, once overlooked, is now recognized as a significant force in human evolution. This process maintains advantageous genetic variations, influencing adaptation and human diversity.

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Area of Science:

  • Human Evolution
  • Population Genetics
  • Molecular Biology

Background:

  • Most human genetic variations are neutral or harmful.
  • Advantageous genetic variations are maintained by balancing selection.
  • Balanced polymorphisms were historically considered rare but are gaining attention.

Purpose of the Study:

  • To review recent developments in understanding balancing selection in human evolution.
  • To discuss the implications of balancing selection for human adaptation.
  • To highlight the importance of balancing selection as a selective force.

Main Methods:

  • Review of theoretical work on adaptation and balancing selection.
  • Analysis of empirical studies identifying targets of balancing selection.
  • Synthesis of evidence on biological functions and functional consequences of advantageous variants.

Main Results:

  • Balancing selection is more prevalent in human evolution than previously assumed.
  • Evidence supports the role of balancing selection in adaptation.
  • Specific biological functions benefit significantly from advantageous genetic diversity.

Conclusions:

  • Balancing selection is a crucial evolutionary mechanism in humans.
  • Understanding balancing selection enhances our knowledge of human genetic diversity.
  • Future research should consider balancing selection's impact on human traits.