Biology Species

Card Set Information

Author:
Tpo
ID:
74211
Filename:
Biology Species
Updated:
2011-03-21 14:02:33
Tags:
Species biology
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Description:
Chp 16
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  1. Species
    Are groups of interbreeding populations that evolve independently from other groups
  2. Organisms can exist in the same species even if___
    They do not have the same appearance
  3. Premating Isolating
    • -prevent mating between the species
    • 1.Geographical isolation
    • 2.Ecological Isolation
    • 3.Temporal Isolation
    • 4.Behavioral Isolation
    • 5.Mechanical Incompatibility
  4. Postmating Isolation
    • -hybrid offspring are less fit
    • 1.Gametic incompatibility
    • 2.Hybrid Inviability
    • 3.Hybrid Infertility
  5. Barriers
    • Something agricultural blocking a species from expanding throughout the area.
    • Ex. Rivers, Oceans, Mountains etc.
  6. Main Causes for Extinction
    Habitat change and destruction
  7. How do new species form(Requirements)
    • Reproductive Isolation of populations
    • Genetic Divergence

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