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. 2023 Dec 5;21(1):160.
doi: 10.1186/s43141-023-00570-1.

Short tandem repeat (STR) variation from 6 cities in Iraq based on 15 loci

Majeed A Sabbah  1 , Mohammed M Al-Zubaidi  2 , Thooalnoon Y Al-Janabi  1 , Dhuha S Namaa  1 , Haider K Al-Rubai  1 , Hala K Ibrahem  1
Affiliations

Short tandem repeat (STR) variation from 6 cities in Iraq based on 15 loci

Majeed A Sabbah et al. J Genet Eng Biotechnol. .

Abstract

Background: One thousand sixty-one individuals were sampled from the cities of Anbar, Baghdad, Basra, Diyala, Najaf, and Wasit in Iraq and typed for 15 forensic STRs to explore the genetic structure of Iraq and develop a forensic DNA database. The total number of alleles that were identified was 203.

Result: Analyses of molecular variance (AMOVA) were then conducted Baghdad provides a good representation of the rest of the country, while Anbar is the most genetically distinct. The average heterozygosities of these loci was 0.779, homozygosities was 0.221, polymorphism information content was 0.77, power of discrimination was 0.927, and power of exclusion was 0.563. At these loci, a matching genotype will occur, on average, in 1 in 8.152 × 1017 individuals. For paternity tests, the average paternity probability for a matching profile is 99.9997%.

Conclusions: These loci are appropriate for use in forensic and paternity testing for this population. Iraq is similar to other countries in the Middle East, particularly Iran and Turkey, and is more similar to Europe than either Asia or Africa.

Keywords: Baghdad; Forensic DNA; Iraq population; STR.

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Conflict of interest statement

The author declares that they have no competing interests.

Figures

Fig. 1
Fig. 1
Multidimensional scaling plot of the genetic distances between Iraq, Turkey, Iran, Syria, Kuwait, Saudi Arabia, Poland, Belgium, China, Japan, Equatorial Guinea, and Angola
See this image and copyright information in PMC

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