Anthropologic studies of tongue moving types in Han of Sichuan

A sample of 577 middle school students(277 males,340 females)of Han of Sichuan was investigated on 5 tongue moving types,including tongue rolling,tongue folding, tongue twisting,pointed tongue and clover-leaf tongue.The results were as follows: (1)The frequencies of tongue rolling,tongue folding,tongue twisting,pointed tongue and clover-leaf tongue were 56.15%,16.12%,32.76%,67.59%and 3.29 respectively. (2)The tongue folding and tongue twisting of Han of Sichuan had high percentages in Chinese ethnic groups,middle frequencies in Pointed tongue and tongue rolling, and low percentage in clover-leaf tongue.(3)No significant sexual difference was found in the frequencies of five tongue moving types.(4)The gene of Tongue rolling had interactive relations with the Tongue folding gene,and there were gene interactions between tongue rolling and tongue twisting,tongue folding and tongue twisting,cloverleaf tongue and tongue twisting.(5)The results of cluster analysis showed that the tongue moving types of Han of Sichuan were similar with those of Mulam.