Sciulli P W
Department of Anthropology, Ohio State University, Columbus 43210, USA.
Am J Phys Anthropol. 1998 Jun;106(2):189-205. doi: 10.1002/(SICI)1096-8644(199806)106:2<189::AID-AJPA6>3.0.CO;2-L.
In order to evaluate the microevolutionary dynamics of morphological features of the deciduous dentition, I collected data on the variation of 57 features (33 crown and 24 root) from prehistoric Ohio Valley populations. I sampled a total of 370 individuals from 26 populations representing a lineage that inhabited the middle and upper Ohio valley region from approximately 3000 to 350 BP. Evolutionary changes in the frequencies of morphological features of the deciduous teeth in this lineage were limited. Over 80% of the features show no significant differences among the populations. The relatively few features that show consistent differences separate pre- and postmaize agricultural populations. I discuss explanations for this change in terms of selection differences or gene flow. The general pattern of morphological trait expression in the deciduous teeth of this Ohio Valley lineage corresponds to what has been termed the Mongoloid dental complex (sinodonty in the permanent teeth). I suggest additional features that, with further study, may be added to this morphological complex.
为了评估乳牙列形态特征的微观进化动态，我收集了来自史前俄亥俄河谷人群的57个特征（33个牙冠和24个牙根）的变异数据。我从26个群体中总共抽取了370个个体，这些群体代表了一个大约在公元前3000年至350年居住在俄亥俄河谷中部和上部地区的谱系。该谱系中乳牙形态特征频率的进化变化有限。超过80%的特征在各群体之间没有显著差异。相对较少的表现出一致差异的特征将玉米种植前和种植后的农业群体区分开来。我从选择差异或基因流动的角度讨论了这种变化的解释。这个俄亥俄河谷谱系乳牙形态特征表达的总体模式与所谓的蒙古人种牙列复合体（恒牙列中的单型齿）相对应。我提出了一些额外的特征，经过进一步研究，可能会被添加到这个形态复合体中。
