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Fisher's fundamental theorem of natural selection
1Steven Frank is at the Dept of Ecology and Evolutionary Biology, University of California, Irvine, CA 92717, USA.
Trends in Ecology & Evolution
|January 18, 2011
Summary
Fisher's Fundamental Theorem of natural selection is often misinterpreted. This study clarifies Fisher's original intent using a clutch size evolution model, highlighting contrasting evolutionary views.
Area of Science:
- Evolutionary Biology
- Population Genetics
Background:
- Fisher's Fundamental Theorem of natural selection is a cornerstone of evolutionary biology.
- The standard interpretation of Fisher's theorem may differ from his original intent.
- Contrasting views on evolution between Fisher and Wright contributed to misunderstandings.
Purpose of the Study:
- To re-examine Fisher's Fundamental Theorem of natural selection.
- To clarify the original meaning of Fisher's theorem.
- To illustrate Fisher's intended meaning through a modern model.
Main Methods:
- Analysis of Fisher's Fundamental Theorem of natural selection.
- Application of a recent model for clutch size evolution.
- Comparison of evolutionary perspectives of Fisher and Wright.
Main Results:
- The standard interpretation of Fisher's theorem is shown to diverge from his original formulation.
- A clutch size evolution model provides a new perspective on Fisher's intended meaning.
- Differences in evolutionary philosophies between Fisher and Wright are identified as a source of misinterpretation.
Conclusions:
- Reinterpreting Fisher's Fundamental Theorem of natural selection is crucial for accurate understanding in evolutionary biology.
- A nuanced understanding of Fisher's theorem is facilitated by modern modeling approaches.
- Acknowledging the historical context of differing evolutionary viewpoints is essential for resolving theoretical ambiguities.
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