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Pattern of mtDNA Variation in Three Populations from São Tomé e Príncipe
Trovoada, M. J.; Pereira, L.; Gusmão, L.; Abade, A.; Amorim, A.; Prata, M. J.We have analysed the matrilineal genetic composition of three self-reported ethnic groups from São Tomé e Príncipe (Gulf of Guinea), an African archipelago whose settlement begun in the late fifteenth century. Sequence data from the hypervariable segments I (HVS-I) and II (HVS-II) were obtained for 30 Angolares, 35 Forros and 38 Tongas. The repertory of mtDNA lineages in São Tomé e Príncipe denoted a fully Afri...
Genetic Structure and Origin of Peopling in The Azores Islands (Portugal): The ...
Santos, C.; Lima, M.; Montiel, R.; Angles, N.; Pires, L.; Abade, A.; Aluja, Ma. P.The Azores islands (Portugal), uninhabited when discovered by Portuguese navigators in the fifteenth century, are located in the Atlantic Ocean 1500 km from the European mainland. The archipelago is formed by nine islands of volcanic origin that define three geographical groups: Eastern (S. Miguel and Sta. Maria), Central (Terceira, Faial, Pico, Graciosa and S. Jorge) and Western (Flores and Corvo). To improve ...
Evidence for population sub-structuring in São Tomé e Príncipe as inferred from...
Trovoada, M. J.; Alves, C.; Gusmão, L.; Abade, A.; Amorim, A.; Prata, M. J.Seven Y-chromosome STR loci, DYS19, DYS389I, DYS389II, DYS390, DYS391, DYS392 and DYS393 have been analysed in population samples of Angolares, Forros and Tongas, three ethnic groups from the African archipelago of São Tomé e Príncipe (Gulf of Guinea). Complete typings were obtained for 103 chromosomes, which belonged to 79 different haplotypes. The mean heterozygosity per locus in the overall São Tomean sample...
HLA-G genetic polymorphism in 57 Portuguese white families studied by PCR-RFLP ...
Alvarez, M.; Santos, P.; Martinho, A.; Simões, O.; Abade, A.; Brêda-Coimbra, H.http://www.sciencedirect.com/science/article/B6VJ0-3Y868K9-T/1/709af60970490b64a33bbeda3e3b35ca
Distribution of AMY2 polymorphism in S. Tomé and Príncipe (West Africa)
Manco, L.; Trovoada, M.; Abade, A.; Amorim, A.Abstract The genetic polymorphism of AMY2 was studied in the population of S. Tom and Prncipe (West Africa) using agarose gel electrophoresis. AMY2 frequencies are reported for the first time in a subSaharian population. The gene frequencies found were: AMY2*1=0.948, AMY2*3=0.052 (N=173). ; http://dx.doi.org/10.1007/BF02447634
A tale of two islands: population history and mitochondrial DNA sequence variat...
Mateu, E.; Comas, D.; Calafell, F.; Pérez-Lezaun, A.; Abade, A.; Bertranpetit, J.The hypervariable segment I of the control region of the mtDNA was sequenced in 45 unrelated individuals from Bioko and 50 from São Tomé, two islands in the Gulf of Guinea that have had very different settlement patterns: Bioko was colonized around 10000 BP, while São Tomé was first settled by the Portuguese, who brought African slaves to the island. Two different patterns of sequence variation are evident and ...
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