Gradualism is defined as

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Study for the 9th Grade Biology SOL Test. Prepare with flashcards and multiple choice questions, each featuring hints and explanations. Get ready for your exam!

Multiple Choice

Gradualism is defined as

Explanation:
Gradualism is the idea that evolution happens through slow, steady accumulation of small genetic changes over long periods of time. Over many generations these small differences build up, eventually leading to the formation of new species. This contrasts with rapid bursts of change followed by long periods of no change, which is described by punctuated equilibrium. It’s also not about evolution driven solely by catastrophes, or about changes in gene frequency due to random mating (genetic drift); gradualism specifically emphasizes the slow, continuous accumulation of heritable changes.

Gradualism is the idea that evolution happens through slow, steady accumulation of small genetic changes over long periods of time. Over many generations these small differences build up, eventually leading to the formation of new species. This contrasts with rapid bursts of change followed by long periods of no change, which is described by punctuated equilibrium. It’s also not about evolution driven solely by catastrophes, or about changes in gene frequency due to random mating (genetic drift); gradualism specifically emphasizes the slow, continuous accumulation of heritable changes.

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