Evolutionary Relationships and Mechanisms Quiz
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Questions and Answers

What is the key requirement for the process of evolution to occur?

  • Geographic variation in habitats
  • Post-zygotic barriers
  • Source of change (variation) (correct)
  • Hybrid unavailability

    • Which mechanism of change involves random events and genetic drift?

  • Artificial selection
  • Directional forces
  • Genetic drift (correct)
  • Natural selection

    • What is the main function of fossils in demonstrating common ancestry?

  • Prevention of decomposition via oxygen exposure
  • Preservation of remains via mineralization
  • Rapid burial of organisms
  • Showing connections within species through exhibited traits (correct)

    • Why are fossilization conditions important for the preservation of remains?

    <p>To prevent decomposition via low oxygen conditions</p> Signup and view all the answers

    What is the Law of Fossil Succession used for in dating fossils?

    <p>Dating fossils according to rock layer age</p> Signup and view all the answers

    What do transitional fossils demonstrate within an evolutionary pathway?

    <p>Connections within species through exhibited traits</p> Signup and view all the answers

    What is the Founder Effect?

    <p>The establishment of a new population by a small subset of a larger population resulting in less genetic variation</p> Signup and view all the answers

    Which era is known for having 'old life' and 'squiggly, wormy life'?

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

    During which period did dino life end due to an asteroid that killed almost everything?

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

    What is Biological Evolution defined as?

    <p>A change in the allele frequency of a population’s gene pool over successive generations</p> Signup and view all the answers

    Which eon is characterized by Earth being a ball of hot rock with the moon in the process of forming?

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

    What does the term 'hybrid infertility' refer to?

    <p>The inability of hybrid offspring to reproduce</p> Signup and view all the answers

    What is the term used to describe a species that is common only to a specific geographical area?

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

    In cladistics, what does a clade consist of?

    <p>A node and all its descendants sharing common traits</p> Signup and view all the answers

    What does homologous structure refer to?

    <p>Structures with different functions due to adaptive radiation</p> Signup and view all the answers

    What is the main factor that leads to analogous structures in distantly related species?

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

    How are cladograms used to represent evolutionary relationships?

    <p>By indicating the common ancestor at each branch point</p> Signup and view all the answers

    What does a speciation event represent on a cladogram?

    <p>The point where a new species forms</p> Signup and view all the answers

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