Developmental Biology Basics Quiz
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Questions and Answers

What is the key difference between preformation and epigenesis?

  • Epigenesis involves the organism simply growing larger, while preformation is a stepwise process.
  • Preformation involves progressive organization, while epigenesis does not.
  • Preformation believes all parts of an organism come into existence together, whereas epigenesis involves a stepwise process. (correct)
  • Epigenesis begins with a complete miniature structure, while preformation does not.

    • Which theory of development believes that the organism develops from an unorganized state?

  • Mid 17th century development
  • 18th century development
  • Epigenesis (correct)
  • Preformation

    • Who is considered the first embryologist according to the text?

  • Jonathan Slack
  • Scott F Gilbert
  • Aristotle (correct)
  • Werner A Muller

    • Which model involves the belief that an organism is preformed as a complete miniature structure in the sperm or egg?

    <p>Preformation model</p> Signup and view all the answers

    In which century did the concept of preformation emerge?

    <p>Mid 17th century</p> Signup and view all the answers

    Which book is referenced for further reading on Developmental Biology?

    <p>'Developmental Biology' by Scott F Gilbert</p> Signup and view all the answers

    How do cells in the embryo become organized into specific structures like organs?

    <p>By differentiating into transient cell types</p> Signup and view all the answers

    What is the main question concerning morphogenesis?

    <p>How do cells become organized into specific structures?</p> Signup and view all the answers

    During embryonic development, why do cells tend to become more restricted in their developmental potential?

    <p>Because of differentiation into transient cell types</p> Signup and view all the answers

    How do our cells know when to stop dividing during embryonic development?

    <p>Due to signals from the environment</p> Signup and view all the answers

    What instructions are present in the nuclei and cytoplasm of the egg and sperm that give rise to a new organism?

    <p>Genetic information for organism formation</p> Signup and view all the answers

    How do changes in development result in the creation of new body forms according to evolution?

    <p>Involving inherited changes in developmental pathways</p> Signup and view all the answers

    What determines the sex of many reptiles according to the text?

    <p>The temperature at which their eggs incubate</p> Signup and view all the answers

    Who was the first to observe the blastoderm of the chick embryo?

    <p>William Harvey</p> Signup and view all the answers

    Which animals undergo meroblastic cleavage?

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

    Who was the first known individual to study comparative developmental anatomy?

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

    What did Marcello Malpighi identify for the first time in chick development?

    <p>The neural groove</p> Signup and view all the answers

    Which scientist discovered the three germ layers in the chick embryo?

    <p>Christian Pander</p> Signup and view all the answers

    Which group of animals are classified as deuterostomes?

    <p>Echinoderms and chordates</p> Signup and view all the answers

    What is the main difference between holoblastic and meroblastic cleavage?

    <p>The amount of yolk in the eggs</p> Signup and view all the answers

    What function did William Harvey suggest for the amniotic fluid?

    <p>Shock absorber for the embryo</p> Signup and view all the answers

    In which organisms can holoblastic cleavage occur?

    <p>Placental mammals</p> Signup and view all the answers

    Who transformed embryology into a specialized branch of science in collaboration?

    <p>Christian Pander</p> Signup and view all the answers

    In what year did William Harvey conclude that all animals originate from eggs?

    <p>1651</p> Signup and view all the answers

    Where does the primitive streak form during embryonic development in avian, reptilian, and mammalian embryos?

    <p>Dorsal face</p> Signup and view all the answers

    Which structure in a chick embryo is analogous to the blastopore in a frog?

    <p>Primitive streak</p> Signup and view all the answers

    What is the traditional term for the key induction process where the progeny of dorsal lip cells induce the dorsal axis and neural tube?

    <p>Primary embryonic induction</p> Signup and view all the answers

    Which experiment involves destroying a portion of an embryo and then observing the development of the impaired embryo?

    <p>Defect experiment</p> Signup and view all the answers

    In which experiment does one observe the development of the embryo after replacing an original part with a part from a different region of the embryo?

    <p>Recombination experiment</p> Signup and view all the answers

    What type of experiment involves replacing a portion of the embryo with a portion from a different embryo?

    <p>Transplantation experiment</p> Signup and view all the answers

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