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Related Concept Videos

Evolutionary Psychology01:20

Evolutionary Psychology

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Evolutionary psychology explores the origins of human behavior and mental processes by framing them within the context of natural selection, a theory famously propounded by Charles Darwin. This field asserts that many behaviors common across human societies — ranging from instinctive fear reactions to complex social interactions — arose as evolutionary adaptations. These adaptations enhanced the survival and reproductive success of our ancestors, thereby becoming embedded in the...
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Convergent Evolution01:54

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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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Criticisms of the Evolutionary Perspective01:23

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In a study where individuals posing as strangers offered compliments and proposed casual sex to students, the responses differed significantly based on gender. Not a single woman accepted the proposal, while 70% of the men agreed. This outcome provides a useful scenario to explore through the lens of evolutionary psychology and social learning theory, highlighting the diverse perspectives on human sexual behaviors.
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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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Mutation, Gene Flow, and Genetic Drift01:09

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In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).
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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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Related Experiment Video

Updated: Nov 19, 2025

Following the Dynamics of Structural Variants in Experimentally Evolved Populations
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Evolvability and evolutionary rescue.

Nathalie Feiner1, Miguel Brun-Usan1, Tobias Uller1

  • 1Department of Biology, Lund University, Lund, Sweden.

Evolution & Development
|February 2, 2021
PubMed
Summary

Evolutionary rescue can improve survival for threatened species facing environmental change. Understanding evolvability, influenced by genetic variation and plasticity, is key for conservation efforts.

Keywords:
developmental biasgene regulatory networksvariational properties

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Area of Science:

  • Conservation Biology
  • Evolutionary Biology
  • Ecology

Background:

  • Threatened species survival can be enhanced by adaptive evolutionary change.
  • Evolutionary rescue is crucial for populations facing environmental shifts or needing to colonize new habitats.

Purpose of the Study:

  • To explore different perspectives on the causes of evolvability.
  • To identify challenges in predicting adaptive evolution.
  • To discuss the application of evolvability research in conservation.

Main Methods:

  • Review of existing theories on evolvability.
  • Discussion of the interplay between genetic variation, developmental systems, and phenotypic plasticity.
  • Analysis of factors influencing the realization of genetic variation as adaptive traits.

Main Results:

  • Standing genetic variation is a common but insufficient predictor of adaptive evolution.
  • Evolvability depends not only on genetic variation but also on its expression through phenotypic plasticity.
  • Developmental systems play a critical role in translating genetic potential into adaptive change.

Conclusions:

  • A comprehensive understanding of evolvability requires considering genetic, developmental, and plastic factors.
  • Conservation strategies can benefit from insights into the mechanisms driving adaptive evolution.
  • Predicting and promoting evolutionary rescue is vital for species persistence in changing environments.