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Achi, Guatemala

Study statistics

Loci
15 Autosomal STRs
Allele type
Unknown
Sample size
82

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Bibliographic information

Date published
March 1, 2019
Title
Forensic Parameters of 15 Autosomal STRs (Identifiler™ Kit) in Three Mayan Groups and One Mestizo Population from Guatemala
Authors
M. Stephenson-Ojea, J. A. Aguilar-Velázquez, M. A. García-King, and H. Rangel-Villalobos
Journal
Legal Medicine
Abstract

The population of Guatemala includes Mestizos (admixed) and different Mayan groups (Native Americans), which have been poorly studied in regards to short tandem repeat (STR) loci used for human identification (HID) purposes. Therefore, 483 unrelated Guatemalan volunteers from one Mestizo and three Mayan populations (Poqomchi, Ixil, and Achi) were analyzed with an AmpFlSTR Identifiler™ kit. Allele frequencies and forensic parameters were obtained for 15 autosomal STRs in these populations. Hardy-Weinberg equilibrium by locus and equilibrium linkage between pair of loci were demonstrated by exact tests in all the studied populations. Larger genetic differentiation probably due to genetic drift effects was observed among the studied Guatemalan Mayan groups than the neighboring Mexican Mayas. In brief, our results validate to use the Identifiler™ kit for HID in three non-previously studied Mayan groups, and one Mestizo population from Guatemala.

Forensic parameters

Forensic parameters for each locus as reported by the authors.
Locus # MP PI Hobs Hexp PIC PD PE HWE
CSF1PO - - 1.139 - 0.561 0.628 0.845 0.247 0.005
D13S317 - - 2.733 - 0.817 0.763 0.922 0.631 0.791
D16S539 - - 3.417 - 0.854 0.746 0.905 0.702 0.836
D18S51 - - 2.531 - 0.803 0.840 0.954 0.604 0.092
D19S433 - - 4.556 - 0.890 0.810 0.936 0.776 0.553
D21S11 - - 1.864 - 0.732 0.734 0.914 0.479 0.989
D2S1338 - - 2.158 - 0.768 0.766 0.924 0.542 0.388
D3S1358 - - 1.281 - 0.610 0.567 0.789 0.303 0.134
D5S818 - - 1.783 - 0.720 0.650 0.861 0.459 0.620
D7S820 - - 2.050 - 0.756 0.666 0.841 0.520 0.140
D8S1179 - - 2.158 - 0.768 0.719 0.904 0.542 0.732
FGA - - 5.125 - 0.902 0.841 0.955 0.800 0.667
THO1 - - 1.051 - 0.524 0.464 0.706 0.210 0.164
TPOX - - 1.519 - 0.671 0.555 0.781 0.385 0.709
VWA - - 2.278 - 0.781 0.741 0.913 0.563 0.923

Allele frequencies

CSF1PO D13S317 D16S539 D18S51 D19S433 D21S11 D2S1338 D3S1358 D5S818 D7S820 D8S1179 FGA THO1 TPOX VWA
6 0.6585
7 0.0549 0.1646
8 0.0183 0.0061 0.0061 0.0244 0.0061 0.4878
9 0.0244 0.3232 0.1951 0.0793 0.0122 0.0061
9.3 0.1646
10 0.2256 0.1585 0.2683 0.0732 0.1585 0.0671
10.3 0.0122
11 0.1768 0.128 0.2256 0.4756 0.3171 0.0305 0.2134
12 0.4878 0.1585 0.2256 0.0556 0.0427 0.2561 0.3963 0.1463 0.2988
13 0.0732 0.189 0.0793 0.1173 0.122 0.0061 0.0549 0.0427 0.2622
13.2 0.2744
14 0.0122 0.0244 0.179 0.1768 0.0427 0.0366 0.378 0.0976
14.2 0.061
15 0.1605 0.1829 0.5488 0.0793 0.1098
15.2 0.0915
16 0.0988 0.0244 0.0061 0.2561 0.0366 0.3537
16.2 0.0061
17 0.2099 0.0488 0.1098 0.25
17.2 0.0061
18 0.1173 0.0122 0.0305 0.0366 0.1098
19 0.0309 0.2988 0.0854 0.0793
20 0.0123 0.128 0.0305
21 0.0062 0.0427 0.1098
22 0.0062 0.1098 0.0976
23 0.0062 0.2866 0.1463
24 0.0427 0.1098
25 0.0061 0.128
26 0.25
27 0.0061 0.0366
28 0.061 0.0061
29 0.2256
30 0.3537
30.2 0.0061
31 0.0183
31.2 0.2073
32 0.0061
32.2 0.0915
33.2 0.0244

Locus histograms

CSF1PO

D13S317

D16S539

D18S51

D19S433

D21S11

D2S1338

D3S1358

D5S818

D7S820

D8S1179

FGA

THO1

TPOX

VWA