Orthogenesis meaning

ôr'thō-jĕn'ĭ-sĭs
The hypothesis, now largely discredited, that the evolution of species is linear and driven largely by internal factors rather than by natural selection.
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The hypothesis that all cultures evolve in a linear manner from primitivism to civilization.
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A now discredited theory that states that the progressive evolution of certain organisms in a restricted direction throughout successive generations is independent of outside influences and natural selection.
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The theory, no longer accepted, that every culture follows the same fixed course of evolution, uninfluenced by differing environmental factors.
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The hypothesis, now largely discredited, that the evolution of species is linear and driven largely by internal factors rather than by natural selection.
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The hypothesis that all cultures evolve in a linear manner from primitivism to civilization.
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(biology) A series of similar mutations in successive generations, producing evolutionary change.
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Origin of orthogenesis

ortho- +"Ž -genesis