Evolutionary Biology: From Darwin to Watson and Crick
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Questions and Answers

What is the term for the directed migration of cells in response to concentration gradients of extracellular signals?

  • Chemotaxis (correct)
  • Retroviruses
  • Mitosis
  • CRISPR

    • Which mechanism is used by bacteria to remove viral DNA from circular chromosomes?

  • Chemotaxis
  • CRISPR (correct)
  • Mitosis
  • Oncogenes

    • What are oncogenes?

  • Host cell DNA
  • Virus-derived genes that can cause cancer (correct)
  • Genes responsible for chemotaxis
  • Genes involved in mitosis

    • How do rattlesnakes use chemical cues to track down prey at night?

    <p>By utilizing chemotaxis</p> Signup and view all the answers

    What is Pangenesis?

    <p>Hypothesis suggesting particles from all parts of the body can collect in the reproductive organs to pass on hereditary information</p> Signup and view all the answers

    What is the main characteristic of retroviruses?

    <p>Incorporation of genes into the host's chromosomes</p> Signup and view all the answers

    What is the main source of variation in traits?

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

    Who discovered that some traits are dominant and some are recessive?

    <p>Gregor Mendel</p> Signup and view all the answers

    Which scientist confirmed that genes are made of DNA and proposed the double helix model?

    <p>James Watson and Francis Crick</p> Signup and view all the answers

    What concept solves Darwin's problem of how heritable particles do not blend?

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

    According to the Modern Synthesis, what does natural selection act upon?

    <p>'Fitter' phenotypes</p> Signup and view all the answers

    What is the process whereby distantly related organisms independently evolve similar traits to adapt to similar necessities called?

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

    Which process is responsible for the spread of antibiotic resistance genes among bacteria?

    <p>Conjugation in bacteria</p> Signup and view all the answers

    What is a significant outcome of serial symbiosis between prokaryotes according to the text?

    <p>Creation of more complicated eukaryotic cells</p> Signup and view all the answers

    Which event led to the creation of mitochondria and chloroplasts in eukaryotic cells?

    <p>Endosymbiosis with bacteria</p> Signup and view all the answers

    What is a key characteristic of the transfer of genes through sexual reproduction?

    <p>Involves sharing chromosomes with another organism</p> Signup and view all the answers

    What process involves the direct contact transfer of DNA from a donor bacterium to a recipient bacterium?

    <p>Conjugation in bacteria</p> Signup and view all the answers

    How do viruses replicate within host cells?

    <p>Utilizing cellular mechanisms of the host cell</p> Signup and view all the answers

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