History of evolutionary thought

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[object Object],[object Object],[object Object],[object Object],THE ROAD TO EVOLUTIONARY THEORY Evolution Before Darwin

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 species not specially created in their present forms, but had evolved from ancestral species  proposed a mechanism for evolution: Natural Selection A population of organisms can change over time as a result of individuals with certain heritable characteristics leaving more offspring than other individuals.

[object Object],[object Object],[object Object],[object Object],“ Then I saw at once that the ever-present variability of all living things would furnish the material from which, by the mere weeding out of those less adapted to the actual conditions, the fittest alone would continue the race.”

Darwinism in Historical Context

[object Object],[object Object],HUGO DE VRIES CARL CORRENS ERICH VON TSCHERMAK

History of evolutionary thought

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