How are stereotyped responses related to instinctive behavior?

In biology, stereotyped responses and instinctive behavior are closely linked, as stereotyped responses serve as the fundamental building blocks of instinctive behavior.1

A stereotyped response is an unlearned, genetically determined behavioral reaction to a specific environmental stimulus. These responses are adaptive mechanisms that have been refined through evolution to aid an organism in essential tasks such as reproduction, nourishment, and predator avoidance.21

Instinct is defined as an inborn, genetically determined behavior pattern that is typically performed in response to specific external stimuli. Ethologists, such as Konrad Lorenz and Nikolaas Tinbergen, identified these instinctive activities—often called fixed action patterns—as being inherently stereotyped. These patterns are characterized by being:234
* Innate and unlearned.3
* Possessed by all members of a species (or sex).3
* Internally controlled, meaning they run their course once triggered by a specific "sign stimulus" or "releaser".34

Because instinctive behaviors are complex, their integral parts—the individual stereotyped responses—can sometimes be obscured by the overall complexity of the action.1