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phyletic gradualism

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chronospecies

Overview page. Subjects: Biological Sciences.

According to one view of evolution (phyletic gradualism), a group of organisms that is derived from its ancestor by a process of slow, steady, evolutionary change and is not regarded as a...

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evolution

Overview page. Subjects: Science and Mathematics — Arts and Humanities.

In biology, the genetic transformations of populations through time, resulting from genetic variation and the subsequent impact of the environment on rates of reproductive success. See also...

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punctuated equilibrium

Overview page. Subjects: Biological Sciences.

The theory that evolution is characterized by geologically long periods of stability during which little speciation occurs, punctuated by short periods of rapid change.

See overview in Oxford Index