REGIONAL POPULATION STRUCTURE IN POSTCLASSIC MEXICO

AbstractThe majority of our knowledge about population structure in Mexico during the Postclassic period (a.d.900–1520) is based on archaeological data. During this time, populations were in contact with each other through extensive trade networks and via the expansion of powerful empires in central and west Mexico. Though archaeological data provides a wealth of information about these relationships, little is known about the effects of these processes on population structure and biological, morphological variation or whether these effects vary across geographic regions. In this study, dental morphological observations are used as a proxy for genetic data in order to assess the differences in regional population structures throughout Mexico. Our analyses show differences in population structure between the various cultural and geographic areas around Mexico. We further conclude that population structures are affected by economic, political, or religious processes. This study provides bioarchaeological support for archaeological interpretations of population structure in Postclassic Mexico.