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AP Biology Flashcards: Common Ancestry

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

QUESTION

What is the founder effect?

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ANSWER

When a new colony is started by a few members. Small founding population creates genetic drift in new location.

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AP Biology: Natural Selection

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What this deck covers

This deck focuses on Common Ancestry, 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 29Practice questions for this set
A developmental biologist compared early embryo stages of a chicken and a lizard. In both lineages, embryos form a transient pharyngeal-arch pattern and a segmented tail bud, and the same set of regulatory genes is expressed in similar spatial regions during these stages. Later development diverges, producing distinct adult morphologies. The shared embryonic structures and gene-expression pattern appear before major lineage-specific traits form. Which inference is best supported by these observations?
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