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Related Experiment Video

Updated: Sep 22, 2025

A Step Beyond BRET: Fluorescence by Unbound Excitation from Luminescence FUEL
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How full is the evolutionary fuel tank?

Bruce Walsh1

  • 1Ecology and Evolutionary Biology, University of Arizona, Tuscon, AZ, USA.

Science (New York, N.Y.)
|May 26, 2022
PubMed
Summary

This study quantifies heritable genetic variance, a key driver of evolution. Understanding this genetic contribution to fitness is crucial for evolutionary biology research.

Area of Science:

  • Evolutionary biology
  • Quantitative genetics

Background:

  • Fitness is central to evolutionary theory.
  • Heritable genetic variance influences evolutionary potential.

Purpose of the Study:

  • To quantify the heritable genetic variance in fitness across studies.
  • To provide a comprehensive estimate of the evolutionary fuel available for natural selection.

Main Methods:

  • Meta-analysis of published studies.
  • Statistical synthesis of heritability estimates for fitness traits.

Main Results:

  • Significant heritable genetic variance in fitness was detected.
  • The magnitude of this variance has implications for the rate of evolution.

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Conclusions:

  • Heritable genetic variance in fitness is a quantifiable and significant evolutionary parameter.
  • This variance represents the raw material for adaptive evolution.