关于家族的研究特别是对一卵双生的研究,阐明了皮肤纹理特点在遗传的重要意义。根据计算一定点之间的嵴线的数目和测量atd角的大小的数量方法以及利用相关系数来评定遗传的相似,已经证明皮肤纹理特征是有累加效应的常染色体基因控制的。在这些理论的探讨之后作者转到实践方面,讨论皮肤纹理学能够帮助解决生物学的和医学的问题的条例。在生物学上,手指和手掌的肤纹花样在决定合子的类型中是 Research on the family, especially on the twins, has elucidated the important genetic significance of skin texture. According to the method of counting the number of crest lines between a certain point and measuring the size of the atd angle, and using the correlation coefficient to assess the genetic similarity, skin texture features have been demonstrated to be controlled by an autosomal gene with additive effects. After discussing these theories the author turns to practical aspects and discusses the rules that skin texture can help to solve biological and medical problems. Biologically, the skin pattern of the fingers and palm is in determining the type of zygosity