Biology: Natural Selection and Evolution
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Questions and Answers

What is a necessary condition for natural selection to cause evolution?

  • A population with no genetic variation
  • A large population with genetic variation (correct)
  • A population with a single founder individual
  • A small population with a high rate of mutation
  • What is the primary reason why cats have lost sweet receptors?

  • They have a short digestive tract
  • They have a diet rich in sweets
  • They have a low metabolism
  • They are obligate carnivores (correct)
  • What is the term for copies of a broken gene in a genome?

  • Homologs
  • Pseudogenes (correct)
  • Mutations
  • Alleles
  • What is the study of the classification and naming of organisms?

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

    What is the term for the study of the geographic distribution of organisms?

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

    What is the primary reason why evolution makes sense of genomes?

    <p>Because they contain a mess of old and broken copies of genes</p> Signup and view all the answers

    What is the term for the study of the structure and function of living organisms?

    <p>Anatomy and physiology</p> Signup and view all the answers

    Offspring must resemble their parents more than they resemble which group in a population?

    <p>other members of the population</p> Signup and view all the answers

    What is the primary outcome of differential success in a population?

    <p>Evolution through natural selection</p> Signup and view all the answers

    Which of the following fields of study is NOT aided by the concept of evolution?

    <p>Quantum physics</p> Signup and view all the answers

    What is the term for the study of the fossil record and its implications for evolution?

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

    Why do pandas have pseudogenes for taste receptors?

    <p>Because they lost the ability to taste meat</p> Signup and view all the answers

    What is the relationship between anatomy and physiology in the context of evolution?

    <p>Anatomy is the study of structure, while physiology is the study of function</p> Signup and view all the answers

    What is the primary way in which evolution helps us make sense of ourselves?

    <p>By understanding our place in the natural world</p> Signup and view all the answers

    Study Notes

    Natural Selection

    • Natural selection requires a large population to cause evolution
    • Offspring must resemble their parents more than they resemble other members of the population (heredity)
    • Differential success is necessary for natural selection to occur

    Evolution

    • Evolution helps make sense of taxonomy, fossil record, biogeography, anatomy, and physiology
    • Genomes contain old and broken copies of genes (pseudogenes)
    • Examples of pseudogenes:
      • Taste receptor in pandas (lost the gene for tasting meat)
      • Sweet receptors in cats (lost due to meat-based diet)

    Applications of Evolutionary Principles

    • Evolutionary principles help us understand ourselves and other cultures
    • Problem-solving techniques inspired by evolution are used in other fields, such as:
      • Racing car design
      • Cybernetics

    Natural Selection

    • Natural selection requires a large population to cause evolution
    • Offspring must resemble their parents more than they resemble other members of the population (heredity)
    • Differential success is necessary for natural selection to occur

    Evolution

    • Evolution helps make sense of taxonomy, fossil record, biogeography, anatomy, and physiology
    • Genomes contain old and broken copies of genes (pseudogenes)
    • Examples of pseudogenes:
      • Taste receptor in pandas (lost the gene for tasting meat)
      • Sweet receptors in cats (lost due to meat-based diet)

    Applications of Evolutionary Principles

    • Evolutionary principles help us understand ourselves and other cultures
    • Problem-solving techniques inspired by evolution are used in other fields, such as:
      • Racing car design
      • Cybernetics

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    Test your understanding of natural selection and evolution, including the requirements for evolution to occur and the evidence supporting it.

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