Explain Why Genetic Variation Is Necessary for Evolution to Take

question 77

Essay

Explain why genetic variation is necessary for evolution to take place.

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Definitions:

Anterior-Root Ganglion

A cluster of nerve cell bodies (neurons) located in the anterior root of the spinal cord, involved in transmitting sensory information from the peripheral to the central nervous system.

Periaqueductal Gray Matter

A region of the midbrain involved in modulating pain perception and in coordinating fight or flight responses.

Semicircular Canals

Three looped tubes in the inner ear that are filled with fluid and help with maintaining balance by detecting head rotation.

Action Potentials

Brief electrical impulses that serve as the fundamental signals by which information is transmitted along nerve cells.