PrincipleHardy–Weinberg PrincipleAllele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences.
PrincipleFounder EffectThe loss of genetic variation that occurs when a new population is established by a very small number of individuals from a larger population.
PrincipleGenetic DriftVariation in the relative frequency of different genotypes in a small population, owing to the chance disappearance of particular genes as individuals die or do not reproduce.