evolution pt 3
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11 Terms
Allopatric Speciation
A type of speciation where a population is separated by a geographic barrier
Sympatric Speciation
A type of speciation where new species evolve from a common ancestor while living in the same area.
Pre-zygotic Mechanisms
Reproductive barriers that prevent fertilization such as behavioral differences or physical incompatibility.
Post-zygotic Mechanisms
Barriers that occur after fertilization
Adaptive Radiation
Rapid evolution of many species from a common ancestor to fill different ecological roles.
Divergent Evolution
When related species become more different over time
Convergent Evolution
When unrelated species evolve similar traits because they live in similar environments.
Parallel Evolution
Similar traits evolve independently in related species that were separated but faced similar environments.
Coevolution
Two or more species evolve in response to changes in each other
Punctuated Equilibrium
Theory that evolution happens in quick bursts followed by long periods of little change.
Gradualism
Theory that evolution occurs slowly and steadily over time.
Note 
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