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The darwin is a unit of measurement created by the evolutionist J.B.S. Haldane in 1949 to describe the rate of evolution. The darwin is defined as a rate of change of one percent per million years.
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Darwin (Unit of Measurement) Term Timeline in The Beak of the Finch
The timeline below shows where the term Darwin (Unit of Measurement) appears in The Beak of the Finch. The colored dots and icons indicate which themes are associated with that appearance.
Chapter 7: Twenty-five Thousand Darwins
...evolution be described in terms of a universal unit—he decided to call this unit the “darwin” and to define it as a rate of change of 1 percent per million years....
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