[Genetic polymorphism and the population difference of 7 Y-STR loci and haplotypes in Chinese Han and Japanese populations].
OBJECTIVE
To investigate the genetic polymorphism of 7 Y-STR loci and haplotypes and analyze their population difference.


METHODS
The DNA samples from 45 Chinese Han and 59 Japanese men were analyzed by PCR and the denatured PAGE followed by silver staining.


RESULTS
33 alleles were identified for 6 loci including DYS393, DYS389 I, DYS19, DYS390, DYS389 II and DYS392, 39 alleles were identified for DYS 385, the frequency distributions were between 0.0169-0.6444, the DP value distributions of them were between 0.5406-0.9579, the DP value of DYS 385 was the highest. With the comparison of data of the 7 loci, significant difference in genetics was observed between the two populations(P < 0.05). There were 95 haplotypes that consisted of the 7 loci, Chinese Han had 41 haplotypes, DP value 0.9960, Japanese population had 54 haplotypes, DP value 0.9965, no common haplotypes were found between them.


CONCLUSIONS
The 7 STR loci above belong to loci of high discriminating ability, the haplotypes are highly polymorphic and their ethical character is apparent.
D044466:Asian People / Q000235:genetics; D002681:China; D041322:Chromosomes, Human, Y / Q000235:genetics*; D005554:Forensic Medicine; D005787:Gene Frequency; D005828:Genetics, Population; D006239:Haplotypes / Q000235:genetics*; D006801:Humans; D007564:Japan; D008297:Male; D018895:Microsatellite Repeats; D010334:Paternity; D011110:Polymorphism, Genetic