Study Guide for Campbell Biology
Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 51, Problem 4TYK
Summary Introduction

Introduction: Fixed action pattern is a sequence of responses in response to an external stimulus. Fixed action patterns are usually unchangeable and once they are initiated are carried to completion. The trigger for such behavior is an external cue called a sign stimulus, such as any red object that prompts aggressive behavior. A male stickleback will not attack a fish lacking red color but will aggressively attack even objects containing small areas of red color.

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