Population data on 11 Y-chromosome STRs from Guiné-Bissau

Rosa, Alexandra; Ornelas, Carolina; Brehm, António; Villems, Richard

doi:10.1016/j.forsciint.2005.04.005

Cited by 23 publications

(19 citation statements)

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“…The microsatellite variation, previously determined for a subset of 215 individuals [67] and newly typed for five samples, was associated to the haplogroups. Typing methodology of microsatellites DYS19, DYS389I, DYS389II, DYS390, DYS391, DYS392, DYS393, DYS385, DYS437, DYS438 and DYS439 is published elsewhere [67].…”

Section: Methodsmentioning

confidence: 99%

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Y-chromosomal diversity in the population of Guinea-Bissau: a multiethnic perspective

et al. 2007

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Background: The geographic and ethnolinguistic differentiation of many African Y-chromosomal lineages provides an opportunity to evaluate human migration episodes and admixture processes, in a pancontinental context. The analysis of the paternal genetic structure of Equatorial West Africans carried out to date leaves their origins and relationships unclear, and raises questions about the existence of major demographic phenomena analogous to the large-scale Bantu expansions. To address this, we have analysed the variation of 31 binary and 11 microsatellite markers on the non-recombining portion of the Y chromosome in Guinea-Bissau samples of diverse ethnic affiliations, some not studied before.

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Section: Methodsmentioning

confidence: 99%

“…Typing methodology of microsatellites DYS19, DYS389I, DYS389II, DYS390, DYS391, DYS392, DYS393, DYS385, DYS437, DYS438 and DYS439 is published elsewhere [67]. An additional GATA microsatellite A7.1 (DYS460 [68]) was tested for E3b1-M35 chromosomes.…”

Section: Methodsmentioning

confidence: 99%

Y-chromosomal diversity in the population of Guinea-Bissau: a multiethnic perspective

et al. 2007

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“…Estimates of parental contributions were obtained using Long's (1991) weighted least squares method, calculated with the ADMIX program. Allele frequencies for the parental populations were based on Rosa et al (2006) and Arroyo-Pardo et al (2005) for the African (Guinea-Bissau and Guinea Equatorial); Biondo et al (2004), Martin et al (2004), andGusmão et al (2002) for European (Italy, Spain, and Portugal) populations. The southern Brazilian Amerindian parental allele frequencies used in this analysis were obtained by typing the AM samples of the present study.…”

Section: Methodsmentioning

confidence: 99%

Y‐STR analysis in Brazilian and South Amerindian populations

Leite¹,

Callegari-Jacques

Carvalho³

et al. 2007

American J Hum Biol

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A sample of 203 Brazilian males from Rio Grande do Sul (RS), the Brazilian southernmost state, was typed for 11 Y-STR markers (DYS19, DYS389I/II, DYS390, DYS391, DYS392, DYS393, DYS385, DYS437, DYS438, and DYS439). We also typed 42 individuals from two South Amerindian tribes (Kaingang and Guarani) to use the data as parental Amerindian contribution to our analyses. Gene and haplotypic diversities were estimated, with the South Amerindian samples showing smaller values for these parameters than Brazilians. To obtain a more comprehensive picture of the genetic structure of the Brazilian population as a whole, the Y-STR data from the RS sample was compared with those already published. No genetic substructuring was observed in the comparisons performed. Multidimensional scaling confirmed the proposed European source of most Y-chromosome Brazilian patrilineages.

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“…Admixture proportions, based on allelic frequencies, were calculated by the gene identity method (Chakraborty, 1975) using the ADMIX3 program. Parental populations used in this study were from Portugal (González-Neira et al, 2000;Carvalho et al, 2003), Italy (Biondo et al, 1998), Guinea-Bissau (Rosa et al, 2006), Angola (Corte-Real et al, 2000), Mozambique (Pereira et al, 2002) and South American Indians (Rodriguez-Delfin et al, 1997;Tarazona-Santos et al, 2001). This study was approved by the Research Ethics Committee of the Ribeirão Preto University Hospital, Ribeirão Preto School of Medicine, University of São Paulo.…”

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Y-STR diversity and ethnic admixture in White and Mulatto Brazilian population samples

et al. 2006

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We investigated 50 Mulatto and 120 White Brazilians for the Y-chromosome short tandem repeat (Y-STR) markers (DYS19, DYS390, DYS391, DYS392 and DYS393) and found 79 different haplotypes in the White and 35 in the Mulatto sample. Admixture estimates based on allele frequencies showed that the admixture of the white sample was 89% European, 6% African and 5% Amerindian while the Mulatto sample was 93% European and 7% African. Results were consistent with historical records of the directional mating between European males and Amerindian or African females. The Brazilian population is a result of interethnic crosses of Europeans, Africans and Amerindians, and is one of the most heterogeneous populations in the world. When the first European colonizers arrived (1500 AD), 1-5 million Amerindians already lived in the region that now is known as Brazil (Salzano and Callegari-Jacques, 1988). Before 1820, European colonization was almost exclusively composed of Portuguese while between 1820 and 1975 the great majority of immigrants were from Portugal and Italy, followed by a small number by people from Spain, Germany, Syria and Japan . Between the 16 th and 19th centuries approximately 3.5 million Africans were brought as slaves to Brazil, coming mainly from West, West-Central and Southeast Africa (Curtin, 1969). The colonization of Brazil involved mostly European men, many of whom produced children with Amerindian and African females.Although the classification of races is wrong from genetic standpoint (Templeton, 1998), Brazilians are classified for census purposes based on color. According to the last Brazilian government census of the 170 million Brazilians, 84 million were males, of which 52% were White, 39% were Brown, 6% were Black and 3% were classified in other categories (IBGE, 2000). Mulatto is the term commonly used in Brazil to designate the offspring result from the union of White and Black people. We used five Ychromosome short tandem repeat (Y-STR) markers, recognized as good markers for population studies, to investigate genetic polymorphism and ethnic admixture in White and Mulatto Brazilian population samples.We investigated 170 healthy, unrelated, individuals seeking paternity investigation at the Ribeirão Preto University Hospital, in the city of Ribeirão Preto, São Paulo state, Southeastern Brazil. The race of the individuals in the sample was determined based on their biomedical records, 120 individuals being White and 50 Mulatto, from Ribeirão Preto and the surrounding towns.We assessed the Y-STR loci DYS19, DYS390, DYS391, DYS392 and DYS393 (Kayser et al., 1997) using blood samples taken from the individuals in our sample, DNA being extracted by an adaptation of the protocol of Higuchi (1989). The PCR reactions were performed according to the conditions described by Kayser et al. (1997) and products separated using 10% denaturing polyacrylamide gel electrophoresis and visualized by silver staining (Sanguinetti et al., 1994). Allele designations were determined by comparison of the sample f...

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Population data on 11 Y-chromosome STRs from Guiné-Bissau

Cited by 23 publications

References 30 publications

Y-chromosomal diversity in the population of Guinea-Bissau: a multiethnic perspective

Y-chromosomal diversity in the population of Guinea-Bissau: a multiethnic perspective

Y‐STR analysis in Brazilian and South Amerindian populations

Y-STR diversity and ethnic admixture in White and Mulatto Brazilian population samples

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