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Environmental Science: Biodiversity & Evolution Intro
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Environmental Science: Biodiversity & Evolution Intro

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Questions and Answers

What is the core concept of biological evolution?

  • The formation of mountain ranges over time
  • The process of trees shedding their leaves
  • Descent through genetic inheritance from a common ancestor (correct)
  • The change in seasons over the course of a year

    • What is the outcome of the process of evolution?

  • The formation of a single, uniform species
  • The elimination of all species except humans
  • A decrease in diversity of life on Earth
  • A pattern of relationships between species (correct)

    • What is the purpose of building 'family trees' in evolutionary biology?

  • To predict the extinction of species
  • To determine the age of the Earth
  • To study the evolution of a single species
  • To reflect evolutionary change and relationships between species (correct)

    • What is the implication of the evolutionary concept that all life on Earth shares a common ancestor?

    <p>All species on Earth are distant cousins</p> Signup and view all the answers

    What is the result of the evolutionary process of descent with modification?

    <p>The incredible diversity of life on Earth</p> Signup and view all the answers

    What is the focus of the study of human evolution and the origin of life?

    <p>The timeline of key events in human evolution and the origin of life</p> Signup and view all the answers

    What is the primary way that scientists reconstruct evolutionary relationships?

    <p>By analyzing inherited species characteristics and other historical evidence</p> Signup and view all the answers

    What are the three primary domains that all life on Earth may be split into?

    <p>Archaea, Bacteria, Eukaryota</p> Signup and view all the answers

    What does the root of a phylogenetic tree represent?

    <p>The ancestral lineage</p> Signup and view all the answers

    What occurs when a lineage separates, resulting in branching on a phylogenetic tree?

    <p>Speciation event</p> Signup and view all the answers

    What is required for natural selection to occur?

    <p>Genetic diversity within a population</p> Signup and view all the answers

    What is the term for the different forms of genes that determine various inherited traits?

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

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