The phylogenetic relationship of pit vipers of the genus Agkistrodon from China was studied using RAPD technique. Totals of 33 samples of Agkistrodon and 2 samples of Vipera ursinii were used in this study, and phylogenetic relationships were inferred using UPGMA based on 72 RAPD makers which were amplified with 11 decamer primers. Each of the species clustered respectively first. Considerable intraspecific differentiation was found in A. intermedius. A certain genetic distance was detected among A. i. int...