目的对粤西汉族舌运动类型进行研究，为人类群体遗传学研究提供资料。
Objective to study the tongue moving types in Han nationality in the western part of Gangdong to provide inference for genetics of human anthropology.
同时，Alu家族是人类群体遗传学、法医学、肿瘤学等的重要研究手段。
At the same time, Alu family is an important research method in human population genetics, forensic, oncology, etc.
舌运动类型特征和一侧优势功能特征与遗传因素有关，是人类群体遗传学研究的重要指标之一，目前多数特征的遗传方式尚未确定。
As the important index in the study of human population genetics, tongue moving types and behavioral traits of lateral functional dominance are correlative with genomic factors.
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