Fitness enters population biology as a vague heuristic notion, rich in metaphor but poor in precision. In the second edition of the origin of species, Darwin accepted Spencer's expression ``the survival of the fittest'' as equivalent to natural selection. It, therefore, refers to those properties of species or populations which can be invoked to account for the abundance, distribution, duration, and composition of species.
CITATION STYLE
Levins, R. (1970). Fitness and Optimization. In Mathematical Topics in Population Genetics (pp. 389–400). Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-642-46244-3_13
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