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Related Concept Videos

The Evidence for Evolution02:55

The Evidence for Evolution

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Genetic variations accumulating within populations over generations give rise to biological evolution. Evolutionary changes can result in the formation of novel varieties and entire new species. These changes are responsible for the diverse forms of life inhabiting the planet. The evidence for evolution suggests that all living organisms descended from common ancestors.
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Speciation Rates01:07

Speciation Rates

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Overview
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What is Evolutionary History?02:35

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Scientists record evolutionary history by analyzing fossil, morphological, and genetic data. The fossil record documents the history of life on Earth and provides evidence for evolution. However, both fossil and living organisms offer evidence that outlines Earth’s evolutionary history.
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Convergent Evolution01:54

Convergent Evolution

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Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.
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Evolution of New Traits in Microbes01:24

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Microorganisms evolve rapidly due to their large population sizes and short generation times, often exhibiting measurable changes within days under laboratory conditions. Natural selection acts on standing genetic variation, enabling the retention and amplification of beneficial traits that confer fitness advantages in changing environments.Adaptive Pigment Regulation in RhodobacterIn Rhodobacter, a genus of purple non-sulfur bacteria, light-harvesting pigments such as bacteriochlorophyll and...
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Genetics of Speciation02:16

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Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.
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Related Experiment Video

Updated: Apr 23, 2026

Following the Dynamics of Structural Variants in Experimentally Evolved Populations
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Coevolution and the diversification of life.

David H Hembry1, Jeremy B Yoder, Kari Roesch Goodman

  • 1Department of Environmental Science, Policy, and Management, University of California, Berkeley, California 94720.

The American Naturalist
|September 17, 2014
PubMed
Summary

Coevolution drives biodiversity, but evidence for its role in speciation is limited. Its impact on diversification varies with interaction type and scale.

Area of Science:

  • Evolutionary biology
  • Ecology
  • Biodiversity science

Background:

  • Coevolution, the reciprocal adaptation between species, is widely proposed as a key driver of biodiversity.
  • This hypothesis spans diverse timescales, from microbial generations to geological eras.

Purpose of the Study:

  • To critically evaluate the evidence supporting coevolution as a major promoter of biological diversification.
  • To assess the causal relationship between coevolutionary selection and the formation of new species at smaller timescales.

Main Methods:

  • Literature synthesis and critical evaluation of existing studies on coevolution and diversification.
  • Analysis of evidence across different interaction types and diversification scales.

Main Results:

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  • Despite the conceptual appeal, direct evidence linking coevolution to speciation is surprisingly scarce.
  • The importance of coevolution in driving diversification is not uniform across all biological interactions or timescales.

Conclusions:

  • The limited evidence for coevolutionary diversification may stem from its context-dependent nature.
  • Coevolution's role in diversification is contingent upon the specific type of ecological interaction and the scale of evolutionary change being considered.