BIOB170N Quiz 12: Hominid Evolution
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Questions and Answers

What characteristic do monotremes share with dinosaurs and crocodiles?

  • having a pouch
  • producing milk
  • having body hair
  • laying eggs (correct)
  • What is a unique feature of monotremes compared to other mammals?

  • they have a pouch
  • they produce milk
  • they lay eggs (correct)
  • they live in Australia
  • What is the origin of a key gene in the development of the mammalian placenta?

  • an ancient retroviral envelope gene (correct)
  • a gene horizontally transmitted from a protist
  • an active influenza virus
  • a transposable element
  • What do monotremes not have that is characteristic of other mammals?

    <p>body hair</p> Signup and view all the answers

    In which group do monotremes belong, along with dinosaurs and crocodiles?

    <p>monophyletic group</p> Signup and view all the answers

    Why are monotremes unique among mammals?

    <p>they lay eggs and produce milk</p> Signup and view all the answers

    Where did Neanderthals occur?

    <p>Middle East, Europe, Central Asia</p> Signup and view all the answers

    What is the characteristic that distinguishes reptiles from other organisms?

    <p>Evolutionary innovation of the amniote egg</p> Signup and view all the answers

    What is the primary function of the horny scales that cover reptiles' skin?

    <p>To prevent using skin as an organ of gas exchange</p> Signup and view all the answers

    Which group of organisms is characterized by the ability to lay eggs in water?

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

    What is the primary reason reptiles are unable to sustain high levels of metabolic activity?

    <p>Their skin is not adapted for gas exchange</p> Signup and view all the answers

    What percentage of the human population lived in urban areas before about 6,000 years ago?

    <p>Zero percent</p> Signup and view all the answers

    What is indicated by genetic analyses of Denisovian DNA?

    <p>Some modern humans interbred with Denisovians at least three different times in different places</p> Signup and view all the answers

    What is the correct combination of statements about Denisovians and modern humans?

    <p>Some modern humans interbred with Denisovians at least three different times in different places, and they led to the extinction of Neanderthals</p> Signup and view all the answers

    What is the significance of the EPAS1 gene in the context of human evolution?

    <p>It allows for efficient use of oxygen at high altitudes</p> Signup and view all the answers

    What is the time frame within which a significant percentage of the human population began to live in urban areas?

    <p>About 6,000 years ago</p> Signup and view all the answers

    What is the percentage of the human population that lived in urban areas before about 6,000 years ago, compared to the percentage that lived in rural areas?

    <p>Zero percent lived in urban areas, and the entire population lived in rural areas</p> Signup and view all the answers

    What is the closest relative of mammals?

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

    What is a benefit associated with low intensity to moderate exercise?

    <p>All of the above</p> Signup and view all the answers

    Which statement about birds is true?

    <p>They are in the monophyletic group that includes dinosaurs and crocodiles</p> Signup and view all the answers

    What is a characteristic shared by dinosaurs and mammals?

    <p>They share a common ancestor</p> Signup and view all the answers

    What is NOT a benefit associated with regular exercise?

    <p>Increased risk of heart disease</p> Signup and view all the answers

    Which group does NOT include birds?

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

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