What is the role of evolution in the Biological approach?

• A. Evolution shapes inherited behaviours via natural selection
• B. Evolution is irrelevant
• C. Evolution only affects physical traits, not behaviour
• D. Evolution occurs through environmental conditioning

Answer: (A)

Evolution provides the mechanism by which behaviours are inherited and shaped for survival. In the Biological approach, genes and brain processes interact, and natural selection favors behaviours that improve an organism’s chances of living and reproducing. Over generations, these advantageous behavioural tendencies—such as instinctive fear responses or mating strategies—become more common because they help pass on genes. So evolution explains why certain behaviours exist and persist, not just how the body works.

It wouldn’t fit to say evolution is irrelevant, or that it only affects physical traits, or that evolution happens through environmental conditioning. Those ideas miss how inherited behavioural tendencies arise and are selected for over generations.