Anatomy Chapter 03

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Author:
LaizyDaizy79
ID:
59178
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Anatomy Chapter 03
Updated:
2011-04-11 22:34:08
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Human Anatomy
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Description:
Organic Evolution
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  1. What is a change in gene frequencies within populations from generation to generation?
    biological evolution
  2. Who is the author of the following definition "...a change in gene frequencies within populations from generation to generation..."?
    E. O. Wilson
  3. What is E. O. Wilson's definition of biological evolution?
    a change in gene frequencies within populations from generation to generation
  4. What is a gene?
    the fundamental unit of heredity
  5. What is a population?
    a group of interbreeding organisms
  6. Why is it important to understand that populations may change in gene frequencies from generation to generation rather than within a generation?
    because individuals don't evolve, populations do (from generation to generation)
  7. Based on Stephen Jay Gould's essay "Evolution as Fact and Theory", what is a fact?
    the world's data
  8. Based on Stephen Jay Gould's essay "Evolution as Fact and Theory", what is a theory?
    structures of ideas that explain and interpret facts
  9. In his essay, "Evolution as Fact or Theory", Stephen Jay Gould considers organic evolution to be a fact and presents three arguments as to why. What are these arguments?
    direct observational evidence, imperfections in nature, & transition fossils
  10. What are the four main points of Darwin's theory of evolution?
    heritable variation, competition, natural selection, & adaptation or speciation
  11. Variation is a main point of Darwin's theory of evolution. Environment may produce variation, as when clones of plants are exposed to different amounts of sunshine. What type of variation is important in organic evolution?
    heritable
  12. Competition between individuals of the same species or different species is an important component of Darwin's theory of evolution. What is the cause of this competition?
    Populations almost always produce more individuals than there are resources to support them
  13. What process selects those individuals best suited to survive and reproduce within the environment they inhabit?
    natural selection
  14. What is a simple but effective defenition of natural selection?
    differential reproductive success
  15. At what level does natural selection work (population or individual)?
    individual
  16. The study guide outlines four main points of Darwin's theory of evolution. Which of the four was Darwin's original idea?
    natural selection or differential reproductive success
  17. Natural selection leads to changes in the genetic makeup of populations and thus changes in gene frequencies within populations. Which of the four main points in Darwin's theory refers to this change?
    adaptation
  18. Individuals do not evolve. Populations do. Why?
    An individual's genetic makeup is formed at conception and does not change throughout their lifetime.
  19. What term refers to the formation of a new species?
    speciation
  20. What is sepciation?
    the formation of a new species

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