Evolutionary Biology: Vestigial Structures and Genetic Homologies
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Questions and Answers

What is the primary driver of the development of analogous structures in different organisms?

  • Similar environmental pressures (correct)
  • Genetic mutations
  • Parallel evolution
  • Common ancestry

    • What is a characteristic of endemic species found on islands?

  • They are found nowhere else in the world (correct)
  • They are only found in freshwater environments
  • They are found only on the mainland
  • They are found on multiple continents

    • What is the process that has led to the distribution of similar species on different islands?

  • Convergent evolution
  • Genetic drift
  • Continental drift (correct)
  • Speciation

    • Which of the following is an example of convergent evolution?

    <p>The development of fins in sharks and dolphins (C)</p> Signup and view all the answers

    What is the term for the independent evolution of similar features in different lineages?

    <p>Convergent evolution (D)</p> Signup and view all the answers

    What is the primary reason for the spread of MRSA?

    <p>Selection of resistant individuals present in bacteria populations (B)</p> Signup and view all the answers

    What is an example of homologous structures?

    <p>Human and canine forelimbs (A)</p> Signup and view all the answers

    What is the term for the geographic distribution of species?

    <p>Biogeography (A)</p> Signup and view all the answers

    What is the process by which different species evolve similar structures in response to similar environments?

    <p>Convergent evolution (B)</p> Signup and view all the answers

    What is the significance of the fossil record in providing evidence for evolution?

    <p>It documents the pattern of evolution and shows that past organisms differed from present-day organisms (A)</p> Signup and view all the answers

    What is the term for structures that are similar in different species but have evolved independently?

    <p>Analogous structures (B)</p> Signup and view all the answers

    What is reflected in an evolutionary tree?

    <p>Evolutionary relationships among groups of organisms (A)</p> Signup and view all the answers

    What is the significance of a branch point in an evolutionary tree?

    <p>The common ancestor of the lineages beginning there and to the right (D)</p> Signup and view all the answers

    What is the term for the remnants of features that served a function in an organism's ancestors?

    <p>Vestigial structures (A)</p> Signup and view all the answers

    What is the relationship between crocodiles and birds?

    <p>They are not closely related, with crocodiles being more closely related to lizards (C)</p> Signup and view all the answers

    What is the term for the universal genetic code used by all forms of life?

    <p>Genetic code (A)</p> Signup and view all the answers

    What is the significance of hatch marks on an evolutionary tree?

    <p>They represent a homologous characteristic shared by all groups to the right (B)</p> Signup and view all the answers

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