A multiplex PCR for 4 X chromosome STR markers and population data from Beijing Han ethnic group

STR multiplex is a practical and simple method to obtain large amounts of important information in forensic and population genetic studies. The present work describes a new multiplex system that allows the simultaneous analysis of 4 X-STR markers, namely DXS9902, DXS6800, DXS6799 and DXS7132, as the tool of approach for X-STR studies. In addition, this work presents the genotyping results obtained for a sample 400 individuals (200 males and 200 females) from Beijing Han ethnic group in China.