Study on 4 Human Population Genetic Characters of Mongol and Han in Western Inner Mongolia
内蒙古西部地区蒙古族、汉族4项人类群体遗传学特征的研究 Study on 4 Human Population Genetic Characters of Mongol and Han in Western Inner Mongolia

From 1998 to 2001,a sample of 2760 Mongol and Han individuals was investigated in 3 areas (Eerduosi (city,)Xilinguole and Bayannaoer leagues) from Inner Mongolia.Each individual was studied on 4 genetic characters (thumb type,palmar digital formular,fingernail type and plantar digital formular).The result is as follows:(1) The frequencies of the straight thumb were over 60%,and there were no significant sexual differences in all of 6 groups.(2) The frequencies of the ring-finger-longer were much higher in 6 groups,and there were significant sexual differences in 4 groups.(3) The frequencies of the long-shaped fingernail were the highest in all groups,the squat-shaped were the lowest.(4) The big toes were longer than the second toes in most people of 6 groups,but without significant sexual differences in each groups.(5) There were no significant correlations between 4 characters.