The effects of Asian population substructure on Y STR forensic analyses.
A total of 3046 males of Chinese, Malay, Thai, Japanese, and Indian population affinity were previously typed for the Y STR loci DYS19, DYS385 (counted as two loci), DYS389I, DYS389II, DYS390, DYS391, DYS392, DYS393, DYS437, DYS438, DYS439, DYS456, DYS458, DYS635, DYS448, and Y GATA H4 using the AmpFlSTR Yfiler kit. These samples were assessed for population genetic parameters that impact forensic statistical calculations. All population samples were highly polymorphic for the 16 Y STR markers with the marker DYS385 being the most polymorphic, because it is comprised of two loci. Most (2677 out of a total of 2806 distinct haplotypes) of the 16 marker haplotypes observed in the sample populations were represented only once in the data set. Haplotype diversities were greater than 99.57% for the Chinese, Malay, Thai, Japanese, and Indian sample populations. For the Y STR markers, population substructure correction was considered when calculating the rarity of a Y STR profile. An F(ST) value, rather than a R(ST) value, is more appropriate under a forensic model. Because the F(ST) values are very small within the Asian populations, the estimate of the rarity of a haplotype comprised of 10-16 markers does not need substructure correction. However haplotypes with fewer markers may require F(ST) corrections when calculating the rarity of the profile.
Budowle
Bruce
B
Federal Bureau of Investigation, Quantico, VA 22135, USA. bruce.budowle@ic.fbi.gov
Ge
Jianye
J
Low
Joyce
J
Lai
Crystal
C
Yee
Wong Hang
WH
Law
Grace
G
Tan
Wai Fun
WF
Chang
Yuet Meng
YM
Perumal
Revathi
R
Keat
Phoon Yoong
PY
Mizuno
Natsuko
N
Kasai
Kentaro
K
Sekiguchi
Kazumasa
K
Chakraborty
Ranajit
R
D001208:Asia; D044466:Asian People / Q000235:genetics*; D041322:Chromosomes, Human, Y; D016172:DNA Fingerprinting; D005819:Genetic Markers; D005828:Genetics, Population; D006239:Haplotypes; D006801:Humans; D008297:Male; D011110:Polymorphism, Genetic; D020080:Tandem Repeat Sequences
D005819:Genetic Markers