Anthropologic studies of tongue moving types in Zang

A sample of 492 students of Zang(183 males,309 females) 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 84.35%,7.32%,32.93%,74.39% and 23.17% respectively.(2) Comparing with other nationalities,Zang had a higher frequency of tongue rolling,tongue twisting and clover-leaf tongue.The frequencies of tongue folding and pointed tongue were middle.(3) No significant sexual difference was found in the frequencies of tongue moving types except tongue twisting.(4) The genes of tongue twisting and pointed tongue had interactive relations with the gene of tongue rolling.The genes of pointed tongue and clover-leaf tongue had interactive relations with the tongue twisting gene.The genes of tongue folding and pointed tongue had interactive relations with the clover-leaf tongue gene.(5) The results of cluster analysis showed that the tongue moving types of Zang were similar with those of Korean,Han and Mongol.