Loesch D, Swiatkowska Z
Acta Genet Med Gemellol (Roma). 1977;26(3-4):247-58. doi: 10.1017/s0001566000009727.
A total of 58 dermatoglyphic characters, consisting of topologically significant pattern elements, i.e., loops and triradii, on palms, soles and fingertips, were tested in a sample of 110 MZ and 111 like-sexed DZ twin pairs. The analysis included homolateral, heterolateral and bilateral concordance rates, the derived Hc coefficient, coefficients of the within-pair association, phi, derived chi2 intraclass correlation coefficients and heritability estimates based on variances (h2) and correlations (Hr), and the variance ratio F. A considerable difference was found in respect of "heritability" values between palmar and sole patterns, in that they are the highest for sole loops and triradii and the lowest for most palmar loops. These data are compared with the h2 values obtained from family correlations. The difficulties in the interpretation of "heritability" estimates based on the material of twins are pointed out and particular attention is drawn to a possibility of the additional bias in twin studies related to a degree of symmetry of the characters investigated.
在110对同卵双胞胎和111对同性异卵双胞胎样本中，对总共58个皮纹特征进行了测试，这些特征由手掌、脚掌和指尖上具有拓扑学意义的图案元素（即环和三叉点）组成。分析包括同侧、异侧和双侧一致性比率、推导的Hc系数、配对内关联系数、phi、推导的卡方组内相关系数以及基于方差（h2）和相关性（Hr）的遗传度估计值，还有方差比率F。手掌和脚掌图案的“遗传度”值存在相当大的差异，其中脚掌的环和三叉点遗传度最高，而大多数手掌环的遗传度最低。将这些数据与从家族相关性获得的h2值进行了比较。指出了基于双胞胎材料解释“遗传度”估计值的困难，并特别关注双胞胎研究中与所研究特征的对称程度相关的额外偏差的可能性。
