Gene Flow Bio 3

Gene Flow

Movement of alleles between populations, increases genetic diversity, reduce genetic differences between populations

Genetic Drift

Selection by Chance, Stronger effect in small populations, can lead to loss in genetic variation

Adaptation

Enhances survival and reproduction in specific environments, results from natural selection over generations, increases organism fitness

Natural Selection

Traits that improve survival and reproduction, driven by environmental factors, leads to adaptation over time

Mutation

change in DNA sequence, creates new alleles, beneficial/harmful/neutral, raw material for evolution

Gene Flow -> Genetic Drift

Can counteract

Gene Flow -> Adaptation

Can introduce

Genetic drift -> Adaptation

can eliminate

Mutation->natural selection

can be amplified

Natural selection -> adaptation

produces. (nothing produces adaptation other than this.)