Central AmericaIndians, Central AmericanSouth AmericaPanamaCaribbean RegionNicaraguaPuerto RicoCosta RicaHispanic AmericansNorth AmericaGeographyPhylogenyAfrican AmericansGenetic VariationSequence Analysis, DNADNA, MitochondrialIndians, North AmericanAsian AmericansMolecular Sequence DataCity PlanningMexican AmericansUnited States