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Evolving the improbable.

G A Dover1

  • 1Dept of Genetics, Downing Street, Cambridge CB2 3EH, UK.

Trends in Ecology & Evolution
|January 14, 2011
PubMed
Summary
This summary is machine-generated.

Resolving the evolutionary debate between natural selection and molecular drive requires detailed, step-by-step probability calculations. Hind-sight probability assignments to unique evolutionary events are insufficient for understanding complex adaptations.

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Area of Science:

  • Evolutionary biology
  • Genetics
  • Biochemistry

Background:

  • The relative contributions of natural selection and molecular drive to evolution remain debated.
  • Previous arguments against these mechanisms often rely on flawed probability calculations of unique historical events.

Purpose of the Study:

  • To critically evaluate the methodologies used to assess the roles of natural selection and molecular drive in evolutionary processes.
  • To highlight the necessity of detailed, step-by-step probabilistic analysis for resolving this debate.

Main Methods:

  • Analysis of probabilistic arguments used by Hoyle and Dawkins regarding natural selection and molecular drive.
  • Identification of the informational requirements for accurate quantification of evolutionary forces.

Main Results:

  • Hoyle's and Dawkins' dismissals of natural selection and molecular drive, respectively, are based on erroneous probability calculations.
  • Accurate quantification requires knowledge of parameters at each step of genetic variation and environmental change.

Conclusions:

  • Resolving the debate necessitates a rigorous, step-by-step probabilistic approach, not hind-sight estimations.
  • Understanding the interplay between genetic variation and environmental heterogeneity is crucial for quantifying evolutionary mechanisms.