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AP Biology Flashcards: Speciation

Study Speciation in AP Biology with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

QUESTION

Identify a type of postzygotic barrier.

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ANSWER

Hybrid sterility. Hybrids are viable but cannot reproduce successfully.

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AP Biology: Natural Selection

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What this deck covers

This deck focuses on Speciation, giving you a quick way to review the definitions, rules, and examples that matter most for AP Biology.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Practice questions

1 of 48Practice questions for this set
Two closely related frog populations occupy the same forest. Males call from similar locations, and females approach calling males. Playback experiments show that females from population 1 approach only the call frequency pattern typical of population 1, while females from population 2 approach only the pattern typical of population 2. When researchers place males and females together in an enclosure, mating occurs mostly within populations even though breeding seasons overlap and hybrids, when produced, develop into viable and fertile adults. Genetic analyses show increasing divergence in allele frequencies over time. Which prezygotic barrier most directly maintains reproductive isolation?
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