Karmakar Bibha, Malkin Ida, Kobyliansky Eugene
Biological Anthropology Unit, Indian Statistical Institute, Kolkata, India.
Anthropol Anz. 2010;68(2):185-93. doi: 10.1127/0003-5548/2011/0083.
18 quantitative finger and palmar dermatoglyphic traits were analyzed with the aim of determining genetic effects and common familial environmental influences on a large (358 nuclear pedigrees) number of twins (MZ and DZ). Genetic analysis based on principal factors includes variance and bivariate variance decomposition analysis. Especially, Factor 1 (digital pattern size) is remarkable, due to its degree of universality. The results of genetic analysis revealed all three extracted factors have significant proportion of additive genetic variance (93.5% to 72.9%). The main results of bivariate variance decomposition analysis appears significant correlation in residual variance between digital pattern size factor (Factor 1) versus finger pattern intensity factor (Factor 4), and palmar main lines factor (Factor 2) verses a-b ridge count (Factor 3), but there was no significant correlation in the genetic variance of factors.
对18项定量手指和手掌皮纹特征进行了分析，目的是确定对大量（358个核心家系）双胞胎（同卵双胞胎和异卵双胞胎）的遗传效应和共同家庭环境影响。基于主因子的遗传分析包括方差和双变量方差分解分析。特别是，因子1（指型大小）因其普遍性程度而显著。遗传分析结果显示，所有三个提取因子都具有显著比例的加性遗传方差（93.5%至72.9%）。双变量方差分解分析的主要结果表明，指型大小因子（因子1）与指纹强度因子（因子4）之间的残差方差存在显著相关性，手掌主线因子（因子2）与a-b嵴计数（因子3）之间也存在显著相关性，但因子的遗传方差之间没有显著相关性。
