Sengupta Mahua, Karmakar Bibha
Anthropology and Human Genetics Unit, Indian Statistical Institute, Calcutta, India.
Coll Antropol. 2003 Dec;27(2):515-21.
In order to investigate the intergenerational change of dermatoglyphics, fingerprints of 400 individuals were collected from an endogamous caste Vaidyas of Barasat, West Bengal. Results were compared with the data of an earlier sample of Banerjee collected in 35 years before on the same community of the same area. As it is generally known that dermatoglyphics is selectively neutral, thus if no other evolutionary forces play a role, we cannot expect any change of dermatoglyphic characters after several years. In the present study, non-significant change in the frequency of pattern and more or less same PII have been observed in both sexes. But significant quantitative differences were found between the two samples. These differences may not be due to the change of intra-uterine environment, rather due to the inter-observer error of these two studies and the small sample size of the earlier study. Because though same methods were used in both studies, inter-observer variation is much possible in ridge counting than pattern type determination.
为了研究皮纹的代际变化，从西孟加拉邦巴拉索尔一个族内通婚的种姓拜地亚人当中收集了400个人的指纹。研究结果与35年前在同一地区同一社群收集的班纳吉早期样本数据进行了比较。众所周知，皮纹是选择性中性的，因此如果没有其他进化力量起作用，我们就不能预期几年后皮纹特征会有任何变化。在本研究中，在两性中均观察到花纹频率无显著变化，且指印指数大致相同。但在两个样本之间发现了显著的数量差异。这些差异可能不是由于子宫内环境的变化，而是由于这两项研究的观察者间误差以及早期研究的样本量较小。因为虽然两项研究都使用了相同的方法，但在嵴纹计数方面，观察者间的差异比花纹类型判定方面的差异更有可能出现。
