AP Biology - Evolution

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What is behavioral isolation?

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Behavioral isolation is a reproductive barrier that occurs when two species have different mating behaviors or rituals, preventing them from interbreeding.

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What is temporal isolation?

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Temporal isolation is a reproductive barrier that occurs when two species breed at different times, such as different seasons or times of day, preventing them from interbreeding.

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Which species is most closely related to humans based on hemoglobin amino acid differences?

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Chimpanzees are the species most closely related to humans, showing the fewest amino acid differences in hemoglobin.

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What is sexual selection?

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Sexual selection is a type of natural selection that acts on an organism's ability to obtain a mate, often leading to the development of traits that are attractive to potential partners.

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What is one key statement of Darwin's theory of evolution by natural selection?

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One key statement is that more offspring are produced than can possibly survive, leading to competition for resources.

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What is geographic isolation?

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Geographic isolation occurs when a population is separated by physical barriers, such as mountains or rivers, leading to the formation of new species.

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What is convergent evolution?

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Convergent evolution is the process where unrelated species develop similar traits or adaptations due to similar environmental pressures.

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What is mechanical isolation?

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Mechanical isolation is a reproductive barrier that occurs when two species have incompatible reproductive structures, preventing successful mating.

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What is the significance of variation in natural selection?

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Variation is crucial in natural selection as it provides the raw material for evolution; individuals with advantageous traits are more likely to survive and reproduce.

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What is the difference between allopatric and sympatric speciation?

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Allopatric speciation occurs when populations are geographically isolated, while sympatric speciation occurs when populations are in the same area but become reproductively isolated.