Polymorphism of nine X chromosomal STR loci in Koreans.
This study describes the polymorphism of the nine STR loci on the X chromosome, DXS6803, DXS8378, GATA164A09, DXS7132, DXS7133, DXS9895, DXS9898, DXS6789, and DXS6795 in Koreans. In each locus, 4-10 alleles were noted and the allelic distribution patterns were the same for males and females. Heterozygosity in females ranged from 0.42 to 0.84. Among the 303 father-daughter or mother-child pairs examined 29 cases of mutation were found, 13 at the DXS6803 locus, 2 at DXS8378, 4 at DXS164A09, 3 at DXS7132, 1 at DXS7133, 2 at DXS9895, 2 at DXS9898, 1 at DXS6789 and 1 at DXS6795. In 208 families including 180 fathers and 177 mothers, 530 different haplotypes were found. Unlike the STR loci on the Y chromosome, cases showing recombination were frequent, and in combination with mutation this made it difficult to discriminate the exclusion cases from those with mutation or recombination based on the haplotype. Details of X chromosomal STRs in Koreans which would be useful for a future large scale database are described.
Son
Jin Young
JY
Department of Forensic Medicine, Seoul National University College of Medicine, 28 Yeongon-dong, Chongno-gu, Seoul 110-799 Korea.
Lee
Yoon Seong
YS
Choung
Chong Min
CM
Lee
Soong Deok
SD
D000328:Adult; D041321:Chromosomes, Human, X / Q000235:genetics*; D005260:Female; D005554:Forensic Medicine / Q000379:methods; D005828:Genetics, Population; D006801:Humans; D007723:Korea; D008297:Male; D011110:Polymorphism, Genetic; D020080:Tandem Repeat Sequences