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When should bioanthropologists use molecular dating?
Muscle Contraction
The process by which muscle fibers shorten, generating force and movement.
External Epithelium
The outermost layer of cells covering the body surfaces and organs, serving as a protective barrier.
Invertebrates
Animals without a backbone. In vertebrates, the hypothalamus produces neurohormones.
Vertebrates
Animals with a backbone or spinal column, which includes mammals, birds, reptiles, amphibians, and fish.
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