The suggests that speciation occurs in brief spurts.

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The punctuated equilibrium model suggests that speciation occurs in brief spurts, separated by long periods of stasis. This stands in contrast to the gradual model of the origin of species, which suggests that speciation occurs gradually over time. The adaptive model of the origin of species focuses on the idea that adaptation to the environment drives speciation, while the allopatric speciation model suggests that geographic isolation is the primary driver of speciation.

The Suggests That Speciation Occurs in Brief Spurts