Final answer:
The evocative pattern is a stimuli or pattern that can trigger specific behaviors in organisms. It can elicit instinctual or learned responses. For example, a red object resembling a male stickleback fish can evoke an aggressive response in male sticklebacks during breeding season.
Step-by-step explanation:
The evocative pattern refers to how certain stimuli or patterns can elicit specific behaviors in organisms. It influences behavior by triggering instinctual or learned responses in an individual. For example, a red object resembling a male stickleback fish can evoke an aggressive response in male sticklebacks during breeding season, even though it is not an actual fish. This shows how the evocative pattern can influence behavior in animals.