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Mitochondrial DNA Control Region Polymorphism in the Population of Alagoas State, North‐Eastern Brazil
Author(s) -
Barbosa Adriana B.G.,
Silva Luiz Antonio F. da,
Azevedo Dalmo A.,
Balbino Valdir Q.,
MauriciodaSilva Luiz
Publication year - 2008
Publication title -
journal of forensic sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.715
H-Index - 96
eISSN - 1556-4029
pISSN - 0022-1198
DOI - 10.1111/j.1556-4029.2007.00619.x
Subject(s) - haplogroup , mitochondrial dna , haplotype , mtdna control region , genetics , hypervariable region , heteroplasmy , biology , locus (genetics) , population , genetic diversity , human mitochondrial dna haplogroup , evolutionary biology , gene , allele , demography , sociology
The sequences of the two hypervariable (HV) segments of the mitochondrial DNA (mtDNA) control region were determined in 167 randomly selected, unrelated individuals living in the state of Alagoas, north‐eastern Brazil. One hundred and forty‐five different haplotypes, associated with 139 variable positions, were determined. More than 95% of the mtDNA sequences could be allocated to specific mtDNA haplogroups according to the mutational motifs. Length heteroplasmy in the C‐stretch HV1 and HV2 regions was observed in 22 and 11%, respectively, of the population sample. The genetic diversity was estimated to be 0.9975 and the probability of two random individuals presenting identical mtDNA haplotypes was 0.0084. The most frequent haplotype was shared by six individuals. All sequences showed high‐quality values and phantom mutations were not detected. The diversity revealed in the mitochondrial control region indicates the importance of this locus for forensic casework and population studies within Alagoas, Brazil.