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13 Cards in this Set

  • Front
  • Back
gene pool
all of the aklleles in a given population
allelic frequency
what % of a population has a given allele
genetic drift
the changes in allele frequency due to random mating
genetic equilibrium
when there is no change in allelic frequency
stabilizing selection
selects against the extremes and for the average
directional selection
selects against one extreme and for the other
disruptional selection
selects against the average and for the extremes
the evolution of new species
reproductive isolation
when two populations cannot cross breed
geographic isolation
reproductive isolation that arises from physical barriers
behavioral isolation
reproductive isolation caused by change in mating behaviors
convergent evolution
different species take on similar characteristics due to similar environment
divergent evolution
similar species change to meet the needs of different environment