David Bourget (Western Ontario)
David Chalmers (ANU, NYU)
Rafael De Clercq
Jack Alan Reynolds
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Biology and Philosophy 19 (2):185-203 (2004)
The concept of fitness, central to population genetics and to the synthetic theory of evolution, is discussed. After a historical introduction on the origin of this concept, the current meaning of it in population genetics is examined: a cause of the selective process and its quantification. Several difficulties arise for its exact definition. Three adequacy criteria for such a definition are formulated. It is shown that it is impossible to formulate an adequate definition of fitness respecting these criteria. The propensity definition of fitness is presented and rejected. Finally it is argued that fitness is a conceptual device, a useful tool, only for descriptive purposes of selective processes, changing from case to case, and thus devoid of any substantial physical counterpart. Any attempt to its reification is an apport to the metaphysical load evolutionary theory has inherited from Natural Theology.
|Keywords||Fitness Population genetics Theory of evolution|
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Marshall Abrams (2009). Fitness “Kinematics”: Biological Function, Altruism, and Organism–Environment Development. Biology and Philosophy 24 (4):487-504.
Marshall Abrams (2007). How Do Natural Selection and Random Drift Interact? Philosophy of Science 74 (5):666-679.
Grant Ramsey (2013). Driftability. Synthese 190 (17):3909-3928.
Thomas A. C. Reydon (2007). Philosophy of Biology, German styleReview of Ulrich Krohs and Georg Toepfer (Eds): Philosophie der Biologie: Eine Einführung [Philosophy of Biology: An Introduction]. Biology and Philosophy 22 (4):619-626.
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