The fluctuating asymmetry(FA)of the mandible of Macaca mulatta and the factors which likely influenced FA variation were investigated in the present study.A total of 60 mandible specimens were divided into four groups according to gender and age(♀42,♂18).Eleven variables on both sides of the mandible were selected,and were converted into FA values.Results show that,totally,there were no significant differences in the asymmetry in these dimensions by age or sex groups.The FA values tended to be higher in fem...