Speciation

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What is speciation?

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The process by which new species arise from existing species, often due to evolutionary changes.

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What is allopatric speciation?

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A type of speciation that occurs when populations are geographically isolated from each other, leading to reproductive isolation.

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What is sympatric speciation?

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A type of speciation that occurs when populations evolve into new species while living in the same geographic area, often due to behavioral or ecological differences.

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What is geographic isolation?

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A reproductive barrier that occurs when populations are separated by physical barriers such as mountains, rivers, or distance.

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What is a prezygotic barrier?

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A reproductive barrier that prevents mating or fertilization between species before a zygote is formed.

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What is a postzygotic barrier?

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A reproductive barrier that occurs after fertilization, affecting the viability or reproductive capacity of hybrid offspring.

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What is temporal isolation?

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A type of prezygotic barrier where species breed at different times of the day, seasons, or years.

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What is mechanical isolation?

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

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What is behavioral isolation?

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A type of prezygotic barrier where differences in mating behaviors or rituals prevent species from mating.

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What is gametic isolation?

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A type of prezygotic barrier where sperm and egg from different species are incompatible, preventing fertilization.