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Do we need an extended evolutionary synthesis?

Massimo Pigliucci1

  • 1Department of Ecology & Evolution, Stony Brook University, 650 Life Science Bldg., Stony Brook, New York 11794, USA.

Evolution; International Journal of Organic Evolution
|October 11, 2007
PubMed
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The Extended Evolutionary Synthesis (EES) may unify evolutionary biology by integrating gene-centric Modern Synthesis with a theory of forms. This extension incorporates concepts like phenotypic plasticity and epigenetic inheritance for a more comprehensive evolutionary framework.

Area of Science:

  • Evolutionary Biology
  • Theoretical Biology

Background:

  • The Modern Synthesis (MS) integrates Darwinism and neo-Darwinism as the current evolutionary paradigm.
  • The MS primarily focuses on genetic mechanisms of evolution.
  • A historical "theory of forms" predates the MS but is currently lacking.

Observation:

  • Philosopher Karl Popper noted the MS's focus on genes, highlighting a gap in explaining "forms."
  • There is a growing discussion about the need for an Extended Evolutionary Synthesis (EES).

Findings:

  • The EES aims to unify theories of genes and forms within evolutionary biology.
  • This unification can be achieved by integrating novel concepts into the MS framework.
  • Key concepts for the EES include evolvability, phenotypic plasticity, epigenetic inheritance, complexity theory, and high-dimensional adaptive landscapes.

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Implications:

  • The EES promises a more holistic understanding of evolutionary processes.
  • It may bridge the gap between microevolutionary (gene-based) and macroevolutionary (form-based) perspectives.
  • This extended framework could offer new insights into the generation and evolution of biological complexity.