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An introduction to microevolution: rate, pattern, process.

A P Hendry1, M T Kinnison

  • 1Organismic and Evolutionary Biology Program, University of Massachusetts, Amherst 01003-5810, USA. ahendry@bio.umass.edu

Genetica
|February 13, 2002
PubMed
Summary
This summary is machine-generated.

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Ongoing evolution, or microevolution, is widespread and occurs rapidly. Microevolutionary processes, driven by natural selection and contingency, can generate macroevolutionary changes over time.

Area of Science:

  • Evolutionary Biology
  • Genetics
  • Speciation

Background:

  • Microevolution (evolution within populations) and macroevolution (formation of new species/forms) are key concepts in evolutionary biology.
  • Understanding the interplay between microevolution and macroevolution is crucial for explaining biodiversity.
  • Contemporary evolution is increasingly documented, highlighting its ongoing nature.

Purpose of the Study:

  • To synthesize current research on microevolution and its role in macroevolution.
  • To examine the conditions favoring or inhibiting microevolutionary change.
  • To address debates on determinism vs. contingency and the micro/macroevolutionary relationship.

Main Methods:

  • Review of empirical studies demonstrating contemporary microevolution.

Related Experiment Videos

  • Synthetic reviews defining conditions for microevolution.
  • Theoretical treatments and empirical reviews on microevolution generating macroevolution.

    • Main Results:

    • Microevolution is nearly ubiquitous and occurs on contemporary timescales.
    • Natural selection is a primary driver, but contingency influences evolutionary pathways and conditions.
    • Microevolutionary processes are capable of generating macroevolutionary trends.

    Conclusions:

    • Microevolution is a fundamental process shaping life's diversity.
    • Macroevolution can be viewed as cumulative microevolutionary change, often occurring in discrete steps.
    • The study of ongoing evolution provides critical insights into evolutionary mechanisms.