Sciulli P W, Janini C, Giesen M
Department of Anthropology, Ohio State University, Columbus 43210.
Am J Phys Anthropol. 1988 Aug;76(4):527-33. doi: 10.1002/ajpa.1330760412.
Significant phenotypic selection acting on the buccolingual diameters of the permanent first and second molars is established for a Late Archaic population in Ohio. Directional selection appears to be acting on an index that increases the size of the maxillary first (UM1) and mandibular second (LM2) molars and decreases the size of the maxillary second (UM2) and mandibular first (LM1) molars. Variance selection is fundamentally disruptive but results in a more integrated (highly correlated) set of characteristics in the after-selection sample.
针对俄亥俄州晚期古风时期人群，确定了对恒牙第一和第二磨牙颊舌径有显著作用的表型选择。定向选择似乎作用于一个指数，该指数增加上颌第一磨牙（UM1）和下颌第二磨牙（LM2）的大小，同时减小上颌第二磨牙（UM2）和下颌第一磨牙（LM1）的大小。方差选择从根本上具有破坏性，但在选择后的样本中会导致一组更具整合性（高度相关）的特征。
