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Following the Dynamics of Structural Variants in Experimentally Evolved Populations
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What is evolutionary novelty? Process versus character based definitions.

Tim Peterson1, Gerd B Müller

  • 1Department of Theoretical Biology, University of Vienna, Wien, Austria. tim.a.peterson@gmail.com

Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution
|June 25, 2013
PubMed
Summary
This summary is machine-generated.

Evolutionary novelty is debated, with a new process-oriented definition causing issues. A character-based definition is proposed, independent of adaptation, to better understand evolutionary novelty.

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Area of Science:

  • Evolutionary Developmental Biology (EvoDevo)
  • Evolutionary Biology
  • Developmental Biology

Background:

  • The field of EvoDevo has refocused attention on evolutionary novelty.
  • Disputes persist regarding the definition and nature of evolutionary novelty.
  • A recent definition links novelty exclusively to adaptation and developmental constraint.

Purpose of the Study:

  • To critique a process-oriented definition of evolutionary novelty.
  • To advocate for a character-based definition of novelty.
  • To explore the broader implications of defining evolutionary novelty.

Main Methods:

  • Commentary and critical analysis of existing definitions.
  • Comparison of process-oriented versus character-based approaches.
  • Discussion of implications for evolutionary theory.

Main Results:

  • A process-oriented definition complicates the identification and application of evolutionary novelty.
  • Such definitions obscure important implications for evolutionary studies.
  • A character-based definition offers a more inclusive framework for evolutionary factors.

Conclusions:

  • Defining evolutionary novelty based on process (adaptation, constraint) presents significant challenges.
  • A character-based definition, independent of adaptive needs, is advocated.
  • This approach moves beyond definitional debates and integrates broader evolutionary factors.