Cladistics and Phylogenetic Systematics Quiz
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Questions and Answers

What is the main assumption of cladistics?

  • There is a single phylogeny of life as a result of evolutionary descent (correct)
  • Evolutionary history cannot be reconstructed
  • Characteristics are randomly distributed among different taxa
  • Species evolve independently without any common ancestry

    • How are cladograms and family trees similar?

  • They both focus on ecological relationships
  • They both represent unrelated species
  • They both tell the pattern of ancestry and descent (correct)
  • They both ignore the concept of common ancestry

    • What does a splitting event in a cladogram represent?

  • Random distribution of characteristics
  • Extinction of the ancestor species
  • Formation of unrelated species
  • New species form from splitting old species (correct)

    • What do sister taxa in a cladogram indicate?

    <p>They are more closely related to each other than to any other group as they share a common ancestor</p> Signup and view all the answers

    What happens at a node in a cladogram?

    <p>A splitting event occurs, forming sister taxa</p> Signup and view all the answers

    What is the main assumption of cladistics?

    <p>There is a single phylogeny of life as a result of evolutionary descent</p> Signup and view all the answers

    What does a splitting event in a cladogram represent?

    <p>Formation of new species</p> Signup and view all the answers

    What do sister taxa in a cladogram indicate?

    <p>Closely related species sharing a common ancestor</p> Signup and view all the answers

    What is represented by a node in a cladogram?

    <p>A splitting event forming sister taxa</p> Signup and view all the answers

    How are cladograms and family trees similar?

    <p>Both show patterns of ancestry and descent</p> Signup and view all the answers

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