Jantz R L, Brehme H, Bender K
Acta Genet Med Gemellol (Roma). 1984;33(4):531-46. doi: 10.1017/s0001566000007054.
A multivariate procedure for estimating heritable components from twin data was applied to ridge counts obtained from the entire dermatoglyphic system. Covariance matrices of MZ and DZ within-pair differences were used to estimate genetic correlation matrices for 20 finger ridge counts, 6 palmar interdigital counts, 20 toe counts, 4 hallucal counts, and 6 sole interdigital counts. The proportion of genetic variation was found to be greater in ridge counts of patterns than in ridge counts of interdigital areas. On digits, finger counts are more highly heritable than toe counts. Each of the dermatoglyphic areas yielded several independent genetic components, ranging from general to specific. Environmental variation was found to be local and to frequently involve reciprocal interaction between twin pairs.
一种从双胞胎数据估计遗传成分的多变量程序被应用于从整个皮纹系统获得的嵴纹计数。同卵双胞胎（MZ）和异卵双胞胎（DZ）对内差异的协方差矩阵用于估计20个手指嵴纹计数、6个手掌指间计数、20个脚趾计数、4个拇趾计数和6个足底指间计数的遗传相关矩阵。结果发现，模式嵴纹计数中的遗传变异比例高于指间区域嵴纹计数中的遗传变异比例。在手指上，手指计数的遗传度高于脚趾计数。每个皮纹区域都产生了几个独立的遗传成分，从一般到特定。环境变异被发现是局部的，并且经常涉及双胞胎之间的相互作用。
