• The conditions for Hardy-Weinberg equilibrium are unlikely to be met in real populations.
  • There are four forces of evolution: mutation, gene flow, genetic drift, and natural selection.
  • Gene flow occurs when individuals move into or out of a population.
  • Genetic drift is a random change in allele frequencies that occurs in a small population.
  • Natural selection will be discussed in the "Natural Selection" concept in the next section of the book.
  • The book is published by Oxford University Press and is available in hard copy for $19.99.
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