CR Biology B Module 5 Lesson 3
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Questions and Answers

What is one of the main focuses of ethologists in studying animal behavior?

  • To categorize all animal behaviors into a single framework
  • To discover the stimuli that trigger specific behaviors (correct)
  • To understand how animals behave in lab settings
  • To analyze how behaviors are shaped solely by genetics
  • How might behaviors evolve according to the principles of natural selection?

  • Behaviors that decrease fitness are likely to persist
  • Behaviors are determined purely by environmental factors without genetic influence
  • Genetically controlled behaviors may become more common if they increase fitness (correct)
  • Behaviors that are less beneficial will enhance survival
  • What does 'nurture' refer to in the context of animal behavior?

  • The genes an animal inherits.
  • The physical characteristics of the animal.
  • The experiences and environment an animal is exposed to. (correct)
  • The instinctual behaviors that an animal displays.
  • What is one reason why certain behaviors, like a squirrel chattering to warn others, can evolve through natural selection?

    <p>They may help close relatives, thereby increasing gene propagation.</p> Signup and view all the answers

    Which question is NOT typically addressed by ethologists when studying animal behavior?

    <p>What emotions do animals experience during the behavior?</p> Signup and view all the answers

    How do behaviors that improve an animal's fitness typically evolve?

    <p>Through natural selection favoring those behaviors.</p> Signup and view all the answers

    What term describes the debate over whether animal behaviors are mainly influenced by genetics or environmental experiences?

    <p>Nature-nurture debate</p> Signup and view all the answers

    Which of the following exemplifies a common animal behavior?

    <p>A cat climbing a tree to escape predators</p> Signup and view all the answers

    What is kin selection?

    <p>A form of natural selection that favors behaviors aiding close relatives.</p> Signup and view all the answers

    What is the potential risk associated with the behavior of a squirrel warning others of a predator?

    <p>Higher vulnerability to being detected by the predator.</p> Signup and view all the answers

    Animal behavior is only influenced by environmental factors.

    <p>False</p> Signup and view all the answers

    Ethologists primarily study animal behavior in laboratory settings.

    <p>False</p> Signup and view all the answers

    The branch of biology that focuses on animal behavior is called ethology.

    <p>True</p> Signup and view all the answers

    Behaviors that increase an animal's fitness are likely to become less common over time.

    <p>False</p> Signup and view all the answers

    The nature-nurture debate pertains to the influence of genetics versus environmental experiences on behavior.

    <p>True</p> Signup and view all the answers

    Nature and nurture both play a role in the behaviors of animals.

    <p>True</p> Signup and view all the answers

    A puppy raised in isolation will likely develop normal social behaviors toward other dogs.

    <p>False</p> Signup and view all the answers

    Hunting in packs is not advantageous for wolves as it does not increase their chances of survival.

    <p>False</p> Signup and view all the answers

    Kin selection is a type of natural selection where behaviors may increase the fitness of close relatives.

    <p>True</p> Signup and view all the answers

    The behavior of a squirrel chattering to warn others is likely advantageous for the squirrel itself.

    <p>False</p> Signup and view all the answers

    Study Notes

    Animal Behavior

    • Animals exhibit various behaviors, including interaction with each other and their surroundings.
    • Ethology is the scientific study of animal behavior, focusing on natural environments rather than controlled settings.
    • Ethologists address four key questions about behavior: causes, triggers, anatomical and functional involvement, and developmental aspects.

    Factors Influencing Behavior

    • Natural Selection: Behaviors that enhance fitness are more likely to persist over generations, while maladaptive behaviors diminish.
    • Nature vs. Nurture Debate: Animal behavior is influenced by both genetic inheritance (nature) and environmental experiences (nurture), with most behaviors resulting from a combination of both.

    Examples of Behaviors

    • Social behaviors, such as pack hunting in wolves, improve survival rates and genetic continuation.
    • Alarm calls in squirrels serve a protective function for others but may risk the calling squirrel’s safety—this paradox can be explained through kin selection.

    Kin Selection

    • Kin selection is a natural selection process where behaviors that aid close relatives increase the likelihood of shared genes being passed down.
    • This explains seemingly self-sacrificial behaviors that benefit the survival of genetically similar individuals.

    Special Cases of Behavior

    • Unique animal behaviors, such as those exhibited by electric eels and octopuses, highlight the diverse adaptations animals employ for survival and interaction.

    Summary of Key Concepts

    • The development of most animal behaviors results from a mix of genetic influence and environmental exposure.
    • Fitness-enhancing behaviors are favored by natural selection and evolve accordingly.

    Animal Behavior

    • Animals exhibit various behaviors, including interaction with each other and their surroundings.
    • Ethology is the scientific study of animal behavior, focusing on natural environments rather than controlled settings.
    • Ethologists address four key questions about behavior: causes, triggers, anatomical and functional involvement, and developmental aspects.

    Factors Influencing Behavior

    • Natural Selection: Behaviors that enhance fitness are more likely to persist over generations, while maladaptive behaviors diminish.
    • Nature vs. Nurture Debate: Animal behavior is influenced by both genetic inheritance (nature) and environmental experiences (nurture), with most behaviors resulting from a combination of both.

    Examples of Behaviors

    • Social behaviors, such as pack hunting in wolves, improve survival rates and genetic continuation.
    • Alarm calls in squirrels serve a protective function for others but may risk the calling squirrel’s safety—this paradox can be explained through kin selection.

    Kin Selection

    • Kin selection is a natural selection process where behaviors that aid close relatives increase the likelihood of shared genes being passed down.
    • This explains seemingly self-sacrificial behaviors that benefit the survival of genetically similar individuals.

    Special Cases of Behavior

    • Unique animal behaviors, such as those exhibited by electric eels and octopuses, highlight the diverse adaptations animals employ for survival and interaction.

    Summary of Key Concepts

    • The development of most animal behaviors results from a mix of genetic influence and environmental exposure.
    • Fitness-enhancing behaviors are favored by natural selection and evolve accordingly.

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