The type of speciation that geographically isolates populations and results in the divergence of distinct species is called ____________ speciation.

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Geographical isolation results in the separation of gene pools leading to allopatric speciation. Gradual speciation refers to slow changes over time, sympatric speciation occurs without geographic isolation, sexual speciation refers to the evolution of distinct reproductive isolating mechanisms, and adaptive speciation is a form of sympatric speciation in which populations diverge due to different ecological niches or resources.

The Type of Speciation That Geographically Isolates Populations and Results