= Effective evolutionary time
{wiki=Effective_evolutionary_time}
Effective evolutionary time is a concept used in evolutionary biology and phylogenetics to describe the time scale over which evolutionary processes such as mutation, selection, and genetic drift have significantly influenced the genetic differences among populations or species. Unlike "calendrical time," which refers to the actual passage of time measured in years or millennia, effective evolutionary time considers the rates of evolutionary change and the various factors that can affect how quickly or slowly evolutionary processes occur.
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