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15-3 Notes: EVOLUTION IN ACTION

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15-3 NOTES: EVOLUTION IN ACTION PP. 308-311 EVOLUTION DEFINED Evolution of a population is due to environment and the interaction of other species ARTIFICIAL ... – PowerPoint PPT presentation

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Title: 15-3 Notes: EVOLUTION IN ACTION


1
15-3 Notes EVOLUTION IN ACTION
  • pp. 308-311

2
Evolution defined
  • Evolution of a population is due to environment
    and the interaction of other species

3
Artificial Selection
  • humans breed for specific traits causing
    differences in species (i.e. dog breeding)

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Types of Evolution
  • Convergent evolution Organisms with very
    different ancestors become more alike due to a
    common environment
  • (i.e fish and whales)- compare analogous
    structures

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  • Ex whale and fish, bird and insect

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Types of Evolution
  • Divergent evolution populations become more and
    more dissimilar to adapt to the environment
  • -compare homologous structures

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  • Adaptive Radiation Population undergoes
    divergent evolution until it fills all areas of
    the environment

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  • EX Rough-skinned newt and garter snake
  • Newt evolved to produce neurotoxins then the
    snake evolved resistance to this toxin through
    genetic mutations.

Birds and flowers, Humans and bacteria are other
examples
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coevolution
  • When two species each evolve in response to each
    other over a long period of time. 
  • This leads to a close relationship

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Classwork
  • Types of Evolution Tree Map
  • Vocabulary 4-squares
  • Convergent evolution
  • Divergent evolution
  • Artificial selection
  • Coevolution

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4-square Model
Definition Picture
Example Related Words (3)
Word
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