Speciation: Allopatric vs. Sympatric

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What is speciation?

Back

The formation of a new species.

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What is gene flow?

Back

The addition or removal of alleles in a population due to individuals entering or leaving one population for another.

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What is allopatric speciation?

Back

Speciation that occurs when a population is divided by a physical barrier, leading to the formation of new species.

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What is sympatric speciation?

Back

Speciation that occurs without physical barriers, often through behavioral differences or reproductive isolation.

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What is behavioral isolation?

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A reproductive barrier where different species have different mating behaviors, preventing them from mating.

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What is hybrid sterility?

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A reproductive barrier where hybrid offspring are sterile and cannot reproduce.

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What is temporal isolation?

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A reproductive barrier where species breed at different times, preventing mating.

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What is mechanical isolation?

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A reproductive barrier where differences in reproductive structures prevent successful mating.

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What role does natural selection play in speciation?

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Natural selection can lead to the adaptation of populations to their environments, contributing to the formation of new species.

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How can a new river lead to allopatric speciation?

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A new river can physically separate populations, preventing gene flow and leading to the development of new species.