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A cladogram is shown for three groups of organisms, X, Y, and Z.
Which relationship is the arrow pointing to in the cladogram?
the common ancestor for X and Z
the common ancestor for X and Y
the common ancestor for X, Y, and Z
the common ancestor for Y and Z
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GPT-5 mini
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The common ancestor for X and Y.
Explanation: the node the arrow points to is the most recent common ancestor where the branch splits into X and Y — it is ancestral to X and Y but not to Z.
Explanation: the node the arrow points to is the most recent common ancestor where the branch splits into X and Y — it is ancestral to X and Y but not to Z.
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