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10 Cards in this Set

  • Front
  • Back
a change in organisms over time (descendants are slightly different from ancestors)
evolution
a type of geneti drift that occurs when only a small number of individuals from a population are present at the establishment (founding) of a new population
founder effect
the percentage of one allele out of all alleles for that particular gene in a population
gene frequency
exchange of genes by migration between population
gene flow
the total number of alleles for a specific gene in a population
gene pool
random changes in gene frequency due to sampling error
genetic drift
the condition in which all assumptions of the hardy-weinberg law are met and gene frequencies do not change over time
genetic equilibrium
gene frequencies do not change over time as a consequence of genetic recombinations during sexual reproduction (provided certain critical assumptions are met)
hardy-weinberg law
non-random and differential survival of individuals in a population due to favorable conditions in the survivors
natural selection
a type of genetic drift in which population size is sharply reduced due to some catastrophic event
population bottleneck