AP®︎ Environmental Science: Topic 2.6 Flashcards

Master key terms and definitions for Topic 2.6 of AP Environmental Science – Adaptations to help you prep for quizzes and the AP exam.

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Term

Adaptation (Evolutionary Adaptation; Genetic Adaptation)

Definition

A heritable characteristic, produced by natural selection over generations, that improves survival and reproduction under particular environmental conditions

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Adaptation (Evolutionary Adaptation; Genetic Adaptation)
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A heritable characteristic, produced by natural selection over generations, that improves survival and reproduction under particular environmental conditions

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Natural Selection
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The process by which heritable traits that increase reproductive success under current conditions become more common in a population over generations

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Selective Pressure
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An environmental condition that causes individuals with some heritable traits to survive or reproduce more successfully than others

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Biological Fitness
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An individual's reproductive contribution to later generations, rather than simply its strength, health, or lifespan

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Structural Adaptation
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A heritable physical feature that increases survival or reproduction under particular environmental conditions

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Physiological Adaptation
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A heritable internal chemical or biological function that increases survival or reproduction under particular conditions

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Behavioral Adaptation
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A heritable tendency to perform an action that increases survival or reproduction, rather than a temporary behavioral adjustment

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Acclimation
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A temporary physiological adjustment by an individual to environmental change, not an inherited population-level adaptation

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