Provide Three Hypotheses for Why Selection Would Favor Metabolically Expensive

question 137

Essay

Provide three hypotheses for why selection would favor metabolically expensive large brains in early humans.

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Definitions:

Spina Bifida

A birth defect where there is incomplete closing of the backbone and membranes around the spinal cord, which can lead to various physical and intellectual disabilities.

Complex Reflex Action

A series of involuntary, coordinated movements that occur as a response to a stimulus, involving both sensory and motor pathways.

Motor Neurons

Nerve cells that initiate and conduct impulses to the muscles and glands to trigger physical actions.

Legs Move

The action or process of moving the legs, which can be voluntary as in walking or running, or involuntary as in spasms or reflex movements.