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Chapter 17: Population Genetics and Evolution (Rates of Evolution (very…

- - - - (1) The population must produce more offspring than can possibly grow and survive to maturity in that habitat
      - (2) The progeny must differ from each other in their types of alleles; if they are identical all are affected by diversity in the same way and to the same degree
- - - - reproduction isolation can occur in many ways, but the two fundamental causes are abiological and biological reprductive barriers
    - - gene flow occurs through pollen transfer, seed dispersal, and vegetative propagation