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Related Concept Videos

Natural Selection and Adaptation01:15

Natural Selection and Adaptation

Natural selection, a fundamental concept in evolutionary biology, is the mechanism by which evolution is driven, favoring organisms that are best adapted to their environments. This process enhances their chances of survival and reproduction. Adaptation, a key outcome of this process, involves genetic modifications that optimize an organism's functionality under specific environmental challenges, such as extreme cold or thinner air at high altitudes.
Beyond physical adaptations, psychological...
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Limits to Natural Selection

Organisms that are well-adapted to their environment are more likely to survive and reproduce. However, natural selection does not lead to perfectly adapted organisms. Several factors constrain natural selection.For one, natural selection can only act upon existing genetic variation. Hypothetically, redtusks may enhance elephant survival by deterring ivory-seeking poachers. However, if there are no gene variants—or alleles—for redtusks, natural selection cannot increase the prevalence of...
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Characteristics of Life01:23

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Biology is a natural science that studies life and living organisms, including their structure, function, development, interactions, evolution, distribution, and taxonomy. The field's scope is extensive and divided into several specialized disciplines, such as anatomy, physiology, ethology, genetics, and many more. All living things share a few key traits, including cellular organization, heritable genetic material and the ability to adapt/evolve, metabolism to regulate energy needs, the...

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Related Experiment Video

Updated: Jun 19, 2026

Visualizing Visual Adaptation
04:43

Visualizing Visual Adaptation

Published on: April 24, 2017

Adaptation as organism design.

Andy Gardner1

  • 1Department of Zoology, University of Oxford, South Parks Road, Oxford OX1 3PS, UK. andy.gardner@zoo.ox.ac.uk

Biology Letters
|October 2, 2009
PubMed
Summary
This summary is machine-generated.

Evolutionary theory explains organismal design through natural selection. This review clarifies adaptation and its historical neglect in population genetics, highlighting future research directions.

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Area of Science:

  • Evolutionary Biology
  • Genetics

Background:

  • The apparent design of organisms presents a central problem in evolutionary biology.
  • Charles Darwin's theory of natural selection provided a foundational explanation for adaptation.
  • Population geneticists have historically overlooked the connection between natural selection and organismal design.

Purpose of the Study:

  • To review the historical development of theories on organismal adaptation.
  • To clarify the definition and scope of adaptation in evolutionary contexts.
  • To identify and suggest future research avenues at the intersection of natural selection and organismal design.

Main Methods:

  • Historical review of theoretical developments in adaptation.
  • Conceptual analysis of adaptation and natural selection.
  • Literature synthesis focusing on population genetics and evolutionary theory.

Main Results:

  • Adaptation is a key concept explaining organismal form and function.
  • A historical gap exists in formally linking natural selection mechanisms to organismal design within population genetics.
  • Clarification of adaptation distinguishes it from non-adaptive traits.

Conclusions:

  • Re-establishing the link between natural selection and organismal design is crucial for a complete evolutionary theory.
  • Future research should focus on integrating adaptation mechanisms into population genetic models.
  • A clearer understanding of adaptation will advance the study of evolutionary processes.