Anthropological study on Chinese children by PTC tasting test

• Published in: Japanese Journal of Oral Biology Vol. 35; no. 5; pp. 402 - 408
• Main Authors: Matsumoto, Toshihide, Nakata, Minoru, Shimizu, Kou, Nonaka, Kazuaki, Yuan, Xiang-Min, Ogata, Tetsuro
• Format: Journal Article
• Language: English
• Published: Japanese Association for Oral Biology 1993
• Subjects: Chinese children; dental anthropology; gene frequency; phenylthiocarbamide (PTC) tasting test
• ISSN: 0385-0137
• DOI: 10.2330/joralbiosci1965.35.402

The purpose of the present study is to clarify the ethnic relationship between the Chinese and the Japanese from the dental anthropological point of view. A PTC tasting test as well as other oral traits was carried out in their off spring. The group of children who were examined, consisted of 272 Uigur, 244 Kazak, 403 Xibo, 373 Mongolian, 355 Han (Beijing), 359 Han (Leshan) and 233 Han (Hong Kong). The control group consisted of 250 Japanese. The following results were obtained. 1. The difference in gender of the percentage of PTC non-tasters was not significant among these populations. 2. The frequency of PTC non-tasters was 36.8% in the Uigur, 25.4% in the Kazak, while only 7.0% in the Xibo, 9.9% in the Mongolian, 7.9% in the Han (Beijing), 7.0% in the Han (Leshan), 7. 7% in the Han (Hong Kong) and 14.0% in the Japanese. 3. The gene frequency of PTC recessive gene (t) in the Uigur was larger than that of PTC dominant gene (T), while the gene frequency of t in the Xibo, the Mongolian, the Han and the Japanese children was smaller than that of T. Thus, it is suggested that the Uigur and the Kazak are closer to the Caucasoids than the Xibo, the Mongolian, the Han and the Japanese.