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Analysis of Y-chromosome Variability and its Comparison with mtDNA Variability Reveals Different Demographic Histories Between Islands in the Azores Archipelago (Portugal) by R. Montiel; C. Bettencourt; C. Silva; C. Santos; M. J. Prata; M. Lima is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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## Summary We determined the Y‐chromosomal composition of the population of the Azores Islands (Portugal), by analyzing 20 binary polymorphisms located in the non‐recombining portion of the Y‐chromosome (NRY), in 185 unrelated individuals from the three groups of islands forming the Archipelago (Eastern, Central and Western). Similar to that described for other Portuguese samples, the most frequent haplogroups were R1(xR1b3f) (55.1%), E(xE3a) (13%) and J (8.6%). Principal components analysis revealed a Western European profile for the Azorean population. No significant differences between Azores and mainland Portugal were observed. However, the haplogroup distribution across the three groups of islands was not similar (__P__<0.003). The Western group presented differences in the frequencies of haplogroups R1, E(xE3a) and I1b2 (27.3%, 22.7% and 13.6%, respectively) when compared to the other two groups. An assessment of the NRY variability, and its comparison with mitochondrial DNA (mtDNA) variability, was further evidence of the differential composition of males during the settlement of the three groups of islands, contrary to what has been previously deduced for the female settler

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Author

R. Montiel; C. Bettencourt; C. Silva; C. Santos; M. J. Prata; M. Lima

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley (ISSN 0003-4800)

Published

2005

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)