mechanisms of evolution

gene flow

natural selection

its the observable change in the allele frequenices of a population over time

stabilizing selection

directional selection

is the loss of genetic variation that occurs when a new population is a very small number of individuals from a larger population.

founder effect

bottleneck effct

gene drift

bottleneck effect

is a change in the frequency of an allele within a population over time

sexual selectoin

a special type of natural selection