Anthropologic study on tongue moving types of Han in Shandong

A sample of 370 middle school students(215 males,155 females) of Han in Shandong 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 76.49%,8.38%,23.78%,69.73% and 3.24% respectively.(2) Compared with other ethnic groups,the tongue rolling of Han in Shandong had a higher frequency.The tongue folding and tongue twisting had middle frequencies.The pointed tongue had a lower frequency,but there was the lowest frequency in clover-leaf tongue.(3) No significant sexual difference was found in the frequencies of four tongue moving types,except pointed tongue.(4) Correlations were little among 5 tongue moving types.The gene of tongue folding had interactive relations with the tongue twisting gene,and there were gene interactions between pointed tongue and clover-leaf tongue.(5) The results of cluster analysis showed that the tongue moving types of Han in Shandong were similar with those of Han(Alxa),Han(Bayannaoer),Han(Yikezhao) and Oroqen.