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evolgen bolker - Evolutionary genetics Overview of...

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1 Evolutionary genetics Overview of terms (micro- and macroevolution) Population genetics and Hardy-Weinberg equilibrium Exceptions to H-W: mutation, drift, gene flow, assortative mating … natural selection Micro- and macroevolution microevolution : a change in the gene pool (allele frequencies) of a population over successive generations macroevolution : “the origin of new taxonomic groups” (cladogenesis) [Campbell] … plus modification of species ( anagenesis ) and extinction Micro- and macroevolution (2) speciation (the formation of new species) is the bridge between these two levels, and the reason that we have taxonomy (species, genus, family, ...) at all • Today: population/evolutionary genetics
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