Abstract: Y chromosome does not recombine at meiosis except its pesudoautosomal region, so it keeps a record of its ancestor 's mutations in the history. As a marker for the study of paternal heredity, Y chromosome polymorphisms play a special role. Using four Y specific microsatellite markers, we carried out a DN A polymorphism analysis of fifty unrelated males randomly picked up from the Han nationality with the family name Wang . There were no difference between the results above and the result of another study, which used the same 3 markers ( DYS19, DYS390, DYS391) to investigate 50 males with different family names randomly chosen from Han nationality. It is concluded that there are no significant difference between haplo types of the males with family name Wang in Beijing and those of random sample of males from Han nationality, which can be explained by the complex origins of family name Wang.

Key words: Y chromosome, DNA polymorphism, Microsatellite, Family name