BIO170.01 Lecture 1: Principles of Developmental Biology
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Questions and Answers

What is the focus of developmental biology?

  • Studying biological form changes over time (correct)
  • Studying cellular development only
  • Studying specific morphological features
  • Studying adult organisms only

    • In developmental biology, what does 'commitment of cells' refer to?

  • The number of cells present in an organism
  • The stability of differentiated cell types
  • The potential to develop into different cell types (correct)
  • The ability of cells to communicate with each other

    • What is the main difference between plant and animal development?

  • Animals rely more on gene expression than plants
  • Animals have more diverse morphological features than plants
  • Plants have fixed cell commitment while animals do not (correct)
  • Plants have more complex developmental processes than animals

    • Which level of complexity does developmental biology study?

    <p>Levels ranging from molecular to organismal</p> Signup and view all the answers

    What is the primary focus of model organisms in developmental biology?

    <p>Studying embryo and postnatal processes</p> Signup and view all the answers

    What is the term for the diagram that maps larval or adult structures onto the region of the embryo from which they arose?

    <p>Fate map</p> Signup and view all the answers

    Which of von Baer’s laws states that less general characters develop from the more general, until finally the most specialized appear?

    <p>Second law</p> Signup and view all the answers

    Which of the following is a characteristic of a fate map?

    <p>It maps larval or adult structures onto the region of the embryo from which they arose</p> Signup and view all the answers

    What is the term for an organism developing from a fertilized egg through developmental events?

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

    What does the first law of von Baer state?

    <p>The general features of a large group of animals appear earlier in development than do the specialized features of a smaller group</p> Signup and view all the answers

    What is the term for an organism developing from a fertilized egg, containing a complete miniature adult (homunculus)?

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

    Which cellular process does not contribute to morphogenesis?

    <p>Changes in cell membrane composition</p> Signup and view all the answers

    According to von Baer's laws, what does the third law state about the early embryo of a higher animal?

    <p>It departs more and more from lower animals</p> Signup and view all the answers

    What is the term for a direct observation diagram that maps larval or adult structures onto the region of the embryo from which they arose?

    <p>Fate map</p> Signup and view all the answers

    What characteristic does von Baer’s first law describe?

    <p>The general features of a large group of animals appear earlier in development than do specialized features of a smaller group.</p> Signup and view all the answers

    Which process does developmental biology primarily focus on?

    <p>Embryonic development</p> Signup and view all the answers

    What concept does developmental biology prioritize over specific morphological features?

    <p>Gene expression</p> Signup and view all the answers

    In developmental biology, what do model organisms mainly study?

    <p>Biological form changes</p> Signup and view all the answers

    What characterizes the primary focus of developmental biology?

    <p>Processes and concepts</p> Signup and view all the answers

    Which level of complexity does developmental biology primarily emphasize in its studies?

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

    What is the main focus of developmental biology in relation to cell behavior?

    <p>Cell differentiation mechanisms</p> Signup and view all the answers

    Which of the following is NOT a factor considered in developmental biology for selecting model organisms?

    <p>Cellular Processes of Morphogenesis</p> Signup and view all the answers

    What does the concept of epigenesis in developmental biology refer to?

    <p>Organism develops from fertilized egg through developmental events</p> Signup and view all the answers

    According to Von Baer’s second law, what develops from the more general characters until finally the most specialized ones appear?

    <p>Cell Death</p> Signup and view all the answers

    What characteristic distinguishes fate maps in developmental biology?

    <p>They map larval or adult structures onto the region of the embryo from which they arose.</p> Signup and view all the answers

    In developmental biology, what does Von Baer’s third law emphasize about the early embryo of a higher animal?

    <p>It departs more and more from the early embryo of lower animals.</p> Signup and view all the answers

    Which cellular process is not a typical contributor to morphogenesis in developmental biology?

    <p>Cell Division</p> Signup and view all the answers

    According to developmental biology, what is the primary focus of von Baer’s laws?

    <p>Pattern Formation</p> Signup and view all the answers

    What does direct observation involve in developmental biology?

    <p>Mapping larval or adult structures onto the region of the embryo from which they arose.</p> Signup and view all the answers

    What is one significant factor considered in developmental biology for selecting model organisms?

    <p>The ease of experimental manipulation.</p> Signup and view all the answers

    What is NOT a focus area for developmental biology?

    <p>Biochemistry and Molecular Biology of Plants</p> Signup and view all the answers

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