Karmakar Bibha, Malkin Ida, Kobyliansky Eugene
Indian Statistical Institute, Biological Anthropology Unit, Kolkata, India.
Coll Antropol. 2013 Jun;37(2):537-43.
Dermatoglyphic asymmetry and diversity traits from a large number of twins (MZ and DZ) were analyzed based on principal factors to evaluate genetic effects and common familial environmental influences on twin data by the use of maximum likelihood-based Variance decomposition analysis. Sample consists of monozygotic (MZ) twins of two sexes (102 male pairs and 138 female pairs) and 120 pairs of dizygotic (DZ) female twins. All asymmetry (DA and FA) and diversity of dermatoglyphic traits were clearly separated into factors. These are perfectly corroborated with the earlier studies in different ethnic populations, which indicate a common biological validity perhaps exists of the underlying component structures of dermatoglyphic characters. Our heritability result in twins clearly showed that DA_F2 is inherited mostly in dominant type (28.0%) and FA_F1 is additive (60.7%), but no significant difference in sexes was observed for these factors. Inheritance is also very prominent in diversity Factor 1, which is exactly corroborated with our previous findings. The present results are similar with the earlier results of finger ridge count diversity in twin data, which suggested that finger ridge count diversity is under genetic control.
基于主要因素分析了大量双胞胎（同卵双胞胎和异卵双胞胎）的皮纹不对称性和多样性特征，通过使用基于最大似然法的方差分解分析来评估遗传效应和共同家庭环境对双胞胎数据的影响。样本包括两种性别的同卵双胞胎（102对男性双胞胎和138对女性双胞胎）以及120对异卵女性双胞胎。所有皮纹特征的不对称性（DA和FA）和多样性都被清晰地分解为不同因素。这些结果与早期针对不同种族人群的研究完全相符，这表明皮纹特征的潜在组成结构可能存在共同的生物学有效性。我们在双胞胎中的遗传力结果清楚地表明，DA_F2大多以显性类型遗传（28.0%），FA_F1是加性遗传（60.7%），但在这些因素上未观察到性别间的显著差异。多样性因素1中的遗传现象也非常显著，这与我们之前的发现完全相符。目前的结果与双胞胎数据中指纹嵴数多样性的早期结果相似，这表明指纹嵴数多样性受遗传控制。
