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Fact 1. Potential exponential increase of populations (superfecundity)

Fact 1. Potential exponential increase of populations (superfecundity) ( Source: Paley, Malthus, and others). Fact 2. Limitation of resources ( Source: Observation, reinforced by Malthus). Mayr’s Schema for the Mechanisms of Natural Selection.

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Fact 1. Potential exponential increase of populations (superfecundity)

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  1. Fact 1. Potential exponential increase of populations (superfecundity) (Source: Paley, Malthus, and others). Fact 2. Limitation of resources (Source: Observation, reinforced by Malthus). Mayr’s Schema for the Mechanisms of Natural Selection A flow chart of Darwin's argument for natural selection. Conclusion 1. Struggle for existence among individuals – some live and some die (Author of conclusion: Malthus). Conclusion 2. Differential survival and reproduction , ie. natural selection (Author of conclusion: Darwin). Fact 3. Uniqueness of the individual (Source: animal breeders, taxonomists). Fact 4. Heritability of much of the individual variation (Source: animal breeders). Conclusion 3. Through many generations: evolution – a change in average character and underlying allele frequencies (Author of conclusion: Darwin). modified from Ernst Mayr. 1988. Toward a New Philosophy of Biology.

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