Models of population history | Patterns of genetic differentiation | Demographic history | |
---|---|---|---|
mtDNA | Microsatellites | ||
Panmixia | One cluster of haplotypes spanning entire study region; Majority of genetic variation found between individuals | No evidence of discernable population structure into k > 2 demes | All individuals equally divergent from one another |
Isolation-by-distance | Positive linear relationship between genetic and geographic distance | Positive linear relationship between genetic and geographic distance | Populations closer to one another share a more recent relationship than those more distant for one another |
Population structure with complete isolation | Haplotypes cluster into discrete and geographically distinct groups | Individuals cluster into discrete, geographically distinct groups | No evidence of recent migration between populations, but ancestral polymorphism may still be present |
Population structure with ongoing migration | Haplotypes cluster into geographically distinct groups with overlap | Individuals cluster into geographically distinct groups with some individuals showing evidence of admixture | Evidence of recent migration between populations that is distinguishable from ancestral polymorphism |