Sidney Santos
Biographic Data
| ID | 4002573 |
|---|---|
| NAME | Sidney Santos |
| GIVEN NAMES | Sidney |
| FAMILY NAME | Santos |
| SIGNATURE | SANTOS S |
| AFFILIATIONS | Universidade Federal do Pará |
| VERIFIED | No |
| TOTAL WORKS | 6 |
| TOTAL CITATIONS | 34 |
| WORKS AS AUTHOR | 6 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1988 |
| LATEST PUBLICATION YEAR | 2011 |
| H-INDEX | 4 |
Male ancestry structure and interethnic admixture in African‐descent communities from the Amazon as revealed by Y‐chromosome Strs
Some genetic markers on both the Y chromosome and mtDNA are highly polymorphic and population‐specific in humans, representing useful tools for reconstructing the past history of populations with poor historical records. Such lack of information is usually true in the case of recent African‐descent populations of the New World founded by fugitive slaves throughout the slavery period in the Americas, particularly in Brazil, where those communities…
Afro-Derived Amazonian Populations
A panel of Ancestry Informative Markers (AIMs) was used to identify population substructure and estimate individual and overall interethnic admixture in 294 individuals from seven African-derived communities of the Brazilian Amazon. A panel of 48 biallelic markers, representing the insertion (IN) or the deletion (DEL) of small DNA fragments, was employed for this purpose. Overall interethnic admixture estimates showed high miscegenation with othe…
Autosome STRs in native South America-Testing models of association with geography and language
Information on one Ecuadorian and three Peruvian Amerindian populations for 11 autosomal short tandem repeat (STR) loci is presented and incorporated in analyses that includes 26 other Native groups spread all over South America. Although in comparison with other studies we used a reduced number of markers, the number of populations included in our analyses is currently unmatched by any genome-wide dataset. The genetic polymorphisms indicate a cl…
Estimates of interethnic admixture in the Brazilian population using a panel of 24 X‐linked insertion/deletion markers
Objectives. In this study, we aimed to identify ancestry informative haplotypes and make interethnic admixture estimates using X‐chromosome markers. Methods. A significant sample (461 individuals) of European, African, and Native American populations was analyzed, and four linkage groups were identified. The data obtained were used to describe the ancestral contribution of populations from four different geographical regions of Brazil (745 indivi…
Heterogeneity of mitochondrial DNA haplotypes in Pre‐Columbian natives of the Amazon region
We report the first study of mitochondrial DNA (mtDNA) sequencing from ancestral Amerindian populations of the South American continent. Sequencing of the D-loop region of mtDNA was carried out for bone fragments from 18 skeletons of Pre-Columbian Amerinidians. The skeletons were excavated in different archeological sites of the Brazilian Amazon region, with dating estimated at 500–4,000 years before the present. The sequencing of at least 354 ba…
Genetic variation within a linguistic group
A total of 136 individuals were studied in relation to 31 genetic systems, and the results were compared with South American Indian averages and previous surveys on the Wayana of French Guiana and Surinam. The information was afterwards integrated with data from other Carib groups, and two types of genetic distances (Nei's and Edwards') were calculated a) between five groups, considering ten systems; and b) between nine groups, using five systems…
Autosome STRs in native South America-Testing models of association with geography and language
Information on one Ecuadorian and three Peruvian Amerindian populations for 11 autosomal short tandem repeat (STR) loci is presented and incorporated in analyses that includes 26 other Native groups spread all over South America. Although in comparison with other studies we used a reduced number of markers, the number of populations included in our analyses is currently unmatched by any genome-wide dataset. The genetic polymorphisms indicate a cl…
Genetic variation within a linguistic group
A total of 136 individuals were studied in relation to 31 genetic systems, and the results were compared with South American Indian averages and previous surveys on the Wayana of French Guiana and Surinam. The information was afterwards integrated with data from other Carib groups, and two types of genetic distances (Nei's and Edwards') were calculated a) between five groups, considering ten systems; and b) between nine groups, using five systems…
Male ancestry structure and interethnic admixture in African‐descent communities from the Amazon as revealed by Y‐chromosome Strs
Some genetic markers on both the Y chromosome and mtDNA are highly polymorphic and population‐specific in humans, representing useful tools for reconstructing the past history of populations with poor historical records. Such lack of information is usually true in the case of recent African‐descent populations of the New World founded by fugitive slaves throughout the slavery period in the Americas, particularly in Brazil, where those communities…
Afro-Derived Amazonian Populations
A panel of Ancestry Informative Markers (AIMs) was used to identify population substructure and estimate individual and overall interethnic admixture in 294 individuals from seven African-derived communities of the Brazilian Amazon. A panel of 48 biallelic markers, representing the insertion (IN) or the deletion (DEL) of small DNA fragments, was employed for this purpose. Overall interethnic admixture estimates showed high miscegenation with othe…
Genetic variation within a linguistic group
A total of 136 individuals were studied in relation to 31 genetic systems, and the results were compared with South American Indian averages and previous surveys on the Wayana of French Guiana and Surinam. The information was afterwards integrated with data from other Carib groups, and two types of genetic distances (Nei's and Edwards') were calculated a) between five groups, considering ten systems; and b) between nine groups, using five systems…
Heterogeneity of mitochondrial DNA haplotypes in Pre‐Columbian natives of the Amazon region
We report the first study of mitochondrial DNA (mtDNA) sequencing from ancestral Amerindian populations of the South American continent. Sequencing of the D-loop region of mtDNA was carried out for bone fragments from 18 skeletons of Pre-Columbian Amerinidians. The skeletons were excavated in different archeological sites of the Brazilian Amazon region, with dating estimated at 500–4,000 years before the present. The sequencing of at least 354 ba…
Estimates of interethnic admixture in the Brazilian population using a panel of 24 X‐linked insertion/deletion markers
Objectives. In this study, we aimed to identify ancestry informative haplotypes and make interethnic admixture estimates using X‐chromosome markers. Methods. A significant sample (461 individuals) of European, African, and Native American populations was analyzed, and four linkage groups were identified. The data obtained were used to describe the ancestral contribution of populations from four different geographical regions of Brazil (745 indivi…
Male ancestry structure and interethnic admixture in African‐descent communities from the Amazon as revealed by Y‐chromosome Strs
Some genetic markers on both the Y chromosome and mtDNA are highly polymorphic and population‐specific in humans, representing useful tools for reconstructing the past history of populations with poor historical records. Such lack of information is usually true in the case of recent African‐descent populations of the New World founded by fugitive slaves throughout the slavery period in the Americas, particularly in Brazil, where those communities…
Afro-Derived Amazonian Populations
A panel of Ancestry Informative Markers (AIMs) was used to identify population substructure and estimate individual and overall interethnic admixture in 294 individuals from seven African-derived communities of the Brazilian Amazon. A panel of 48 biallelic markers, representing the insertion (IN) or the deletion (DEL) of small DNA fragments, was employed for this purpose. Overall interethnic admixture estimates showed high miscegenation with othe…
Autosome STRs in native South America-Testing models of association with geography and language
Information on one Ecuadorian and three Peruvian Amerindian populations for 11 autosomal short tandem repeat (STR) loci is presented and incorporated in analyses that includes 26 other Native groups spread all over South America. Although in comparison with other studies we used a reduced number of markers, the number of populations included in our analyses is currently unmatched by any genome-wide dataset. The genetic polymorphisms indicate a cl…
Forensic and Genetic Research (5 works) · Geography (5 works) · Biology (4 works) · Demography (4 works) · Gene (4 works) · Genetics (4 works) · Population (4 works) · Allele (3 works) · Amazon rainforest (3 works) · Ecology (3 works)