Genetic Studies in Tobishima: II. Dermatoglyphic Differentiation among the Villages
TLDR
The finger and palm prints of 328 males and 369 females from Tobishima Island in Yamagata Prefecture were examined for qualitative and quantitative characters, attempting to reveal a regional dermatoglyphic differentation in relation to the population structure reported previously.Abstract:
The finger and palm prints of 328 males and 369 females from Tobishima Island in Yamagata Prefecture were examined for 16 qualitative and 7 quantitative characters, attempting to reveal a regional dermatoglyphic differentation in relation to the population structure reported previously. A high degree of dermatoglyphic differentiation was found among three villages on Tobishima, especially in finger patterns, both hypothenar and thenar/I configurations, total finger ridge counts, and a-b ridge counts. Graphic profiles summarizing variation patterns in qualitative traits were strikingly different from one village to another, suggesting that the dermatoglyphic differentia-tion was apparently of random nature. Such rare variants as hypothenar whorls, hypothenar radial arches, and accessory axial triradii showed an uneven distribution among the villages. Further, a considerable deviation of the Tobishima population from the general Japanese was found in pattern frequencies, especially in missing c triradii, accessory interdigital triradii, thenar/I patterns, and simian creases. These results indicate that, as suggested by the previous report, the regional dermatoglyphic differentiation on Tobishima has been caused mainly by random genetic drift.read more
Citations
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Quantitative and qualitative finger dermatoglyphics in the Basque Valley of Urola, Spain.
TL;DR: The results of this study show the existence of heterogeneity among valleys for digital trait frequencies and for finger ridge count, and this heterogeneity is more marked in females.
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Geographic variation of six dermatoglyphic traits in Eurasia
Robert R. Sokal,Gregory Livshits +1 more
TL;DR: The hypothesis of diffusion processes is supported by substantial interpopulation correlations between dermatoglyphic traits that contrast sharply with largely negligible intralocality correlations.
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Latent structure of dermatoglyphs in the population of Selska Valley.
Jasna Miličić,Maruška Vidovič +1 more
TL;DR: The discriminant analysis and latent structure of the quantitative properties of dermatoglyphs suggest the presence of certain differences in gene pools of two studied populations (the group of villages in the valley and the group of mountain villages).
Journal ArticleDOI
Genetic Structure of Human Populations on Tobishima Island
TL;DR: It is suggested that random genetic drift, gene flow, inter-village migrations and probably founder effect have contributed as the main factors to the production of genetic differentiation among the villages on Tobishima.
References
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The genetic structure of a tribal population, the Yanomama Indians
TL;DR: In this article, the authors initiated a major program to collect data on the breeding structure of human populations, focusing on the surviving relatively unacculturated, tribal-type populations.