Objective To investigate the population genetic polymorphisms of 24 Y-STR loci in unrelated individuals in Eastern Chinese Han population, and to compare the difference of Han group between Eastern China and Guangdong. Methods The population genetics of 24 Y-STR loci in 268 unrelated Han individuals from Eastern China were analyzed by GFS 24 Y-STR amplification kit. The allele frequencies in Eastern Chinese Han population were compared with the data in Guangdong Han population,and the difference analysis be...