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Biology 17.4
 

Biology 17.4

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    Biology 17.4 Biology 17.4 Presentation Transcript

    • 17-4 Patterns of Evolution
    • Macroevolution
      Large-scale evolutionary changes that take place over long periods of time.
    • Adaptive Radiation
      Process by which a single species or small group of species evolves into several different forms that live in different ways; rapid growth in the diversity of a group of organisms.
    • Convergent Evolution
      Process by which unrelated organisms independently evolve similarities when adapting to similar environments.
    • Coevolution
      Process by which two species evolve in response to changes in each other.
    • Punctuated Equilibrium
      Pattern of evolution in which long stable periods are interrupted by brief periods of more rapid change.
    • Key Concept
      Six important topics in macroevolution are extinction, adaptive radiation, convergent evolution, coevolution, punctuated equilibrium, and changes in developmental genes