Chapter 22: The Origin of Species

Must Know

Sympatric species
Biological species concept definition
Reproductive isolating mechanisms:
. . . . prezygotic: geographic, ecological, temporal,
. . . . . . . . . . . . . behavioral, mechanical, prevention of
. . . . . . . . . . . . . gamete fusion
. . . . postzygotic: hybrid inviability, hybrid infertility
Problems with the biological species concept
Adaption
Sympartic speciation
Allopatric speciation
Instantaneous speciation through polyploidy
. . . . Autopolyploidy
. . . . Allopolyploidy
Disruptive selection
Darwin's finches
Gradualism vs. punctuated equilibrium
Mass extinctions

Instructor: Professor Clyde Herreid, herreid@buffalo.edu
and Professor Chuck Fourtner: fourtner@buffalo.edu
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