/Journal Article Archive
Journal Article Archive 2016-10-14T01:03:42+00:00

Journal Article Archive

Y-STR diversity and sex-biased gene flow among Caribbean populations

Journal: Gene | Year: 2013

Abstract:

In the present study, we report, for the first time, the allele and haplotype frequencies of 17 Y-STR (Y-filer) loci in the populations of Haiti, Jamaica and the Bahamas (Abaco, Eleuthera, Exuma, Grand Bahama, Long Island and New Providence). This investigation was undertaken to assess the paternal genetic structure of the abovementioned Caribbean islands. A total of 607 different haplotypes were identified among the 691 males examined, of which 537 (88.5%) were unique. Haplotype diversities (HD) ranged from 0.989 in Long Island to 1.000 in Grand Bahama, with limited haplotype sharing observed among these Caribbean collections. Discriminatory capacity (DC) values were also high, ranging from 79.1% to 100% in Long Island and Grand Bahama, respectively, illustrating the capacity of this set of markers to differentiate between patrilineal related individuals within each population. Phylogenetic comparison of the Bahamian, Haitian and Jamaican groups with available African, European, East Asian and Native American populations reveals strong genetic ties with the continental African collections, a finding that corroborates our earlier work using autosomal STR and Y-chromosome binary markers. In addition, various degrees of sex-biased gene flow exhibiting disproportionately higher European paternal (as compared to autosomal) influences were detected in all Caribbean islands genotyped except for Abaco and Eleuthera. We attribute the presence or absence of asymmetric gene flow to unique, island specific demographic events and family structures.

Peoples: - | Places: - | Topics: - | DNA Type: Y-DNA

Y-STR genetic diversity in autochthonous Andalusians from Huelva and Granada provinces (Spain)

Journal: Forensic Science International: Genetics | Year: 2012

Abstract:

Seventeen Y-chromosomal short tandem repeats (STRs) were analyzed in 347 healthy, unrelated, autochthonous males from the Andalusian provinces of Huelva (N = 167) and Granada (N = 180). AmpFlSTR Y-filer PCR Amplification kit (Applied Biosystems) was used to type the Y-STR markers. A total of 156 and 166 different haplotypes for the 17 Y-STR set were detected in Huelva, and Granada, respectively. The same haplotype diversity was found for both samples (0.998 ± 0.001), and the overall discrimination capacity was 0.904. The most common minimal haplotype (DYS19, DYS389 I, DYS389 II, DYS390, DYS391, DYS392, DYS393) in both subpopulations was 14-13-16-24-11-13-13, which is also the most frequent haplotype among Atlantic European populations. Comparison analysis using pairwise RST values and Analysis of Molecular Variance (AMOVA) revealed a significant genetic distance between our Andalusian samples and other ones from the northern Iberian fringe (including Basque and Pyrenean populations). However, results from the multi-dimensional scaling analysis (MDS) yielded a well-defined group of Iberian populations separated from the other Mediterranean clusters observed.

Peoples: - | Places: - | Topics: - | DNA Type: Y-DNA

Y-STR genetic diversity of Croatian (Bayash) Roma

Journal: Forensic Science International: Genetics | Year: 2008

Abstract:

Seventeen Y-chromosomal short tandem repeats (STRs) (DYS19, DYS385, DYS389I, DYS398II, DYS390, DYS391, DYS392, DYS393, DYS437, DYS438, DYS439, DYS448, DYS456, DYS458, DYS635, GATA H4.1) were typed in DNA samples from 146 unrelated adult Romani Bayash men from eastern and northwestern Croatia. Analysed Croatian Bayash Romani population represents an example of genetically homogenous population characterised by low levels of haplotype diversity and unique haplotype ratio as well as sharing of the same most frequent (founding) haplotype and its close derivatives by more than one third of the analyzed men. Despite almost exclusive sharing of the same minimal haplotype and its closely related derivates on the background of the Indian Y SNP haplogroup H1, we observed considerable level of genetic differentiation of Romani populations across Europe that should not be neglected in forensic statistics.

Peoples: - | Places: - | Topics: - | DNA Type: Y-DNA

Y-STR Haplogroup Diversity in the Jat Population Reveals Several Different Ancient Origins

Journal: Frontiers in Genetics | Year: 2017

Abstract:

The Jats represent a large ethnic community that has inhabited the northwest region of India and Pakistan for several thousand years. It is estimated the community has a population of over 123 million people. Many historians and academics have asserted that the Jats are descendants of Aryans, Scythians, or other ancient people that arrived and lived in northern India at one time. Essentially, the specific origin of these people has remained a matter of contention for a long time. This study demonstrated that the origins of Jats can be clarified by identifying their Y-chromosome haplogroups and tracing their genetic markers on the Y-DNA haplogroup tree. A sample of 302 Y-chromosome haplotypes of Jats in India and Pakistan was analyzed. The results showed that the sample population had several different lines of ancestry and emerged from at least nine different geographical regions of the world. It also became evident that the Jats did not have a unique set of genes, but shared an underlying genetic unity with several other ethnic communities in the Indian subcontinent. A startling new assessment of the genetic ancient origins of these people was revealed with DNA science.

Peoples: Jats | Places: India, Pakistan, and South Asia | Topics: Y-STR | DNA Type: Y-STR

Y-STR haplotypes in Central Anatolia region of Turkey

Journal: Forensic Science International | Year: 2004

Abstract:

Allele frequencies and haplotypes of the 11 Y-chromosome STRs loci, namely DYS19, DYS385a/b, DYS389I/II, DYS390, DYS391, DYS392, DYS393, DYS438, and DYS439 were determined in a sample of 113 unrelated males from the Central Anatolia region of Turkey. In the 113 samples 106 different haplotypes were encountered, of which 100 were observed only once. The overall haplotype diversity was 0.9987. In the study, a duplication at locus DYS19 and locus DYS393 was observed. The results demonstrate that these loci will be very useful for human identification in forensic cases and paternity tests in the Central Anatolia region.

Peoples: - | Places: - | Topics: - | DNA Type: Y-DNA

Y-STR variation in Albanian populations: implications on the match probabilities and the genetic legacy of the minority claiming an Egyptian descent

Journal: International journal of legal medicine | Year: 2010

Abstract:

Y chromosome variation at 12 STR (the Powerplex® Y system core set) and 18 binary markers was investigated in two major (the Ghegs and the Tosks) and two minor (the Gabels and the Jevgs) populations from Albania (Southern Balkans). The large proportion of haplotypes shared within and between groups makes the Powerplex 12-locus set inadequate to ensure a suitable power of discrimination for the forensic practice. At least 85% of Y lineages in the Jevgs, the cultural minority claiming an Egyptian descent, turned out to be of either Roma or Balkan ancestry. They also showed unequivocal signs of a common genetic history with the Gabels, the other Albanian minority practising social and cultural Roma traditions.

Peoples: - | Places: - | Topics: - | DNA Type: Y-DNA

« First ‹ Previous 1 20 110 118 119 120