Phylogeny

AP Biology· difficulty 3/5

Chimpanzee Human Gorilla Orangutan

From this great-ape phylogeny, which species shares the most recent common ancestor with humans?

  • A

    All three equally

  • B

    Chimpanzee

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  • C

    Orangutan

  • D

    Gorilla

Explanation

Chimps and humans branch from the most recent node — sharing ~99% of DNA. Gorilla split earlier; orangutan earlier still.

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