Isolation, contact and social behavior shaped genetic diversity in West Timor
| Autor: | J. Stephen Lansing, Michael F. Hammer, Sean S. Downey, Tatiana M. Karafet, Herawati Sudoyo, Murray P. Cox, Peter Norquest, Meryanne K. Tumonggor |
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| Rok vydání: | 2014 |
| Předmět: |
Male
0106 biological sciences media_common.quotation_subject Molecular Sequence Data Immigration Biology DNA Mitochondrial 010603 evolutionary biology 01 natural sciences 03 medical and health sciences Gene Frequency Cultural diversity Genetics Humans Wife Population Growth Social Behavior Genetics (clinical) Language 030304 developmental biology media_common Analysis of Variance Chromosomes Human X 0303 health sciences Chromosomes Human Y Autosome Geography Social change Genetic Variation Cultural Diversity Sequence Analysis DNA language.human_language Indonesian Genetics Population Haplotypes Social Isolation Indonesia language Matrilocal residence Ethnology Female Original Article Mainland |
| Zdroj: | Journal of Human Genetics |
| ISSN: | 1435-232X 1434-5161 |
| DOI: | 10.1038/jhg.2014.62 |
| Popis: | Timor, an eastern Indonesian island linking mainland Asia with Australia and the Pacific world, had a complex history, including its role as a contact zone between two language families (Austronesian and Trans-New Guinean), as well as preserving elements of a rich Austronesian cultural heritage, such as matrilocal marriage practices. Using an array of biparental (autosomal and X-chromosome single-nucleotide polymorphisms) and uniparental markers (Y chromosome and mitochondrial DNA), we reconstruct a broad genetic profile of Timorese in the Belu regency of West Timor, including the traditional princedom of Wehali, focusing on the effects of cultural practices, such as language and social change, on patterns of genetic diversity. Sex-linked data highlight the different histories and social pressures experienced by women and men. Measures of diversity and population structure show that Timorese men had greater local mobility than women, as expected in matrilocal communities, where women remain in their natal village, whereas men move to the home village of their wife. Reaching further back in time, maternal loci (mitochondrial DNA and the X chromosome) are dominated by lineages with immigrant Asian origins, whereas paternal loci (Y chromosome) tend to exhibit lineages of the earliest settlers in the eastern Indonesian region. The dominance of Asian female lineages is especially apparent in the X chromosome compared with the autosomes, suggesting that women played a paramount role during and after the period of Asian immigration into Timor, perhaps driven by the matrilocal marriage practices of expanding Austronesian communities. |
| Databáze: | OpenAIRE |
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