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Plasticity-Led Evolution and Human Culture.

David A Wells1

  • 1Department of Biological Sciences, Macquarie University, Balaclava Rd, Macquarie Park, NSW, 2109, Australia. da.wells@bigpond.com.

Integrative Psychological & Behavioral Science
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PubMed
Summary
This summary is machine-generated.

Human traits evolve through organic evolution and social learning. Socially learned traits influence evolution by providing selective pressures, leading to changes in associated traits, not the learned traits themselves.

Keywords:
Evo-DevoExtended evolutionary synthesisGene-culture theoryLactase persistencePlasticity-first evolutionSocial learning

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Area of Science:

  • Evolutionary Biology
  • Genetics
  • Sociology

Background:

  • Human traits develop through organic evolution and social learning.
  • Traditional views define evolution as changes in gene variant frequencies, with culture evolving separately.
  • An alternative perspective considers gene expression changes as crucial to evolution.

Purpose of the Study:

  • To explore the interplay between social learning and organic evolution.
  • To re-evaluate the mechanisms of evolution beyond gene frequency changes.
  • To understand how non-genetic factors like culture influence evolutionary trajectories.

Main Methods:

  • Conceptual analysis of evolutionary mechanisms.
  • Examination of gene expression regulation.
  • Integration of social learning theories with evolutionary biology.

Main Results:

  • Gene expression is regulated by non-genetic, context-specific triggers.
  • Socially learned traits can exert selective pressures, influencing evolution.
  • Evolutionary changes driven by social learning typically affect associated organic traits.

Conclusions:

  • Evolution is influenced by gene expression and non-genetic factors, including social learning.
  • Socially learned behaviors can drive evolutionary adaptation in related traits.
  • Culture and organic evolution are intricately linked, not separate processes.