Frequency variations of discrete cranial traits in major human populations. III. Hyperostotic variations
Frequency variations of discrete cranial traits in major human populations. III. Hyperostotic variations
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DOI：
10.1046/j.1469-7580.2001.19930251.x
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发表时间：
2001-09-01
影响因子：
2.4
通讯作者：
Ishida, H
中科院分区：
文献类型：
--
作者：
Hanihara, T;Ishida, H
在来自世界各地的81个主要人群样本中研究了7个离散的颅骨特征，这些特征通常被归类为骨质增生特征，内侧腭管，舌下神经管桥接，前髁结节，第三髁，颈静脉孔桥接，听觉外生骨疣和下颌舌骨桥接。在几个样本中，在腭内侧管和颈静脉孔桥接中检测到双侧特征的显著不对称发生。显着的性状间关联被发现之间的一些对的性状，但不一致的大型地理样本。听觉外生骨疣主要发生在男性。除了少数样本中的听觉外生骨疣和下颌舌骨桥接外，显著的性别差异很小。特征的频率分布（除了听觉外生骨疣）显示了一些区域间的倾斜性和区域内的不连续性，这表明遗传漂变可能有助于观察到的变异模式。
Seven discrete cranial traits usually categorised as hyperostotic characters, the medial palatine canal, hypoglossal canal bridging, precondylar tubercle, condylus tertius, jugular foramen bridging, auditory exostosis, and mylohyoid bridging were investigated in 81 major human population samples from around the world. Significant asymmetric occurrences of the bilateral traits were detected in the medial palatine canal and jugular foramen bridging in several samples. Significant intertrait associations were found between some pairs of the traits, but not consistently across the large geographical samples. The auditory exostosis showed a predominant occurrence in males. With the exception of the auditory exostosis and mylohyoid bridging in a few samples, significant sex differences were slight. The frequency distributions of the traits (except for the auditory exostosis) showed some interregional clinality and intraregional discontinuity, suggesting that genetic drift could have contributed to the observed pattern of variation.