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Which listed animal normally has 12 pairs of ribs and 12 pairs of cranial nerves?

Humans normally have twelve pairs of ribs and twelve pairs of cranial nerves. Fish and frogs have only ten pairs of cranial nerves, and frogs have no true ribs. Snakes, like…

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Which listed animal normally has 12 pairs of ribs and 12 pairs of cranial nerves?

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Correct answer D

Humans normally have twelve pairs of ribs and twelve pairs of cranial nerves. Fish and frogs have only ten pairs of cranial nerves, and frogs have no true ribs. Snakes, like other reptiles, have twelve pairs of cranial nerves but hundreds of ribs, so only humans fit both counts.

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