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The first mandibular premolar is "sectorial" in chimps. Is the human's mandibular premolar sectorial?

User Synoon
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Final answer:

No, the human's mandibular premolar is not sectorial like a chimp's. It has a flatter shape with two rounded cusps that are useful for mashing food.

Step-by-step explanation:

No, the human's mandibular premolar is not sectorial like a chimp's. In chimpanzees, the first mandibular premolar is sectorial, which means it is adapted for cutting and shearing food. However, in humans, the mandibular premolar is not sectorial. It has a flatter shape with two rounded cusps that are useful for mashing food.

User Ejucovy
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