Lecture 19: Evolving Behavior - What Evolves?
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Questions and Answers

What does the term 'atavism' refer to in the context of bird behavior evolution?

  • A characteristic exclusive to modern bird species
  • A trait acquired by birds from their immediate environment
  • A behavior unique to birds with long bodies
  • A reversion to an ancestral quadruped pattern (correct)

    • Why is Lorenz's Atavism hypothesis considered inadequate in explaining bird behavior evolution?

  • It fails to consider the dorsal and ventral scratching routes
  • It overlooks the importance of limb locomotion in bird behavior
  • It cannot account for the bidirectional pattern changes observed
  • It does not address the diversity of species displaying over wing scratching (correct)

    • What is a distinguishing feature of the development of pattern change in vertebrates according to the text?

  • Limbless animals being unaffected by pattern change
  • The synchronous flexing of both sides of the body axis
  • Tadpoles transitioning directly into limb locomotion
  • Axial locomotion relying on the Central Pattern Generator (CPG) (correct)

    • What aspect of bird behavior evolution is characterized by the presence of dorsal and ventral scratching routes?

    <p>The independent evolution of two distinct behavior patterns (D)</p> Signup and view all the answers

    In what way do long-bodied vertebrates like frogs differ from limbless animals in terms of locomotion?

    <p>Long-bodied vertebrates exhibit sinusoidal movements controlled by the CPG (B)</p> Signup and view all the answers

    What problem is mentioned to be absent when it comes to pattern change in vertebrate locomotion?

    <p>'Problems of Development' as it can be bidirectional (B)</p> Signup and view all the answers

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