Ancient Voyaging and Polynesian Origins 在線電子書 pdf 下載 txt下載 epub 下載 mobi 下載 2024

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Soares P 作者

譯者

2011-2 出版日期

24 頁數

0 價格

叢書系列

9786132856173 圖書編碼

Ancient Voyaging and Polynesian Origins 在線電子書圖書標籤: 分子生物學世界史前史

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發表於2024-07-07

Ancient Voyaging and Polynesian Origins 在線電子書 epub 下載 mobi 下載 pdf 下載 txt 下載 2024

Ancient Voyaging and Polynesian Origins 在線電子書 epub 下載 pdf 下載 mobi 下載 txt 下載 2024

Ancient Voyaging and Polynesian Origins 在線電子書 pdf 下載 txt下載 epub 下載 mobi 下載 2024

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Ancient Voyaging and Polynesian Origins 在線電子書 pdf 下載 txt下載 epub 下載 mobi 在線電子書下載

Ancient Voyaging and Polynesian Origins 在線電子書圖書描述

The "Polynesian motif" defines a lineage of human mtDNA that is restricted to Austronesian-speaking populations and is almost fixed in Polynesians. It is widely thought to support a rapid dispersal of maternal lineages from Taiwan ~4000 years ago (4 ka), but the chronological resolution of existing control-region data is poor, and an East Indonesian origin has also been proposed. By analyzing 157 complete mtDNA genomes, we show that the motif itself most likely originated >6 ka in the vicinity of the Bismarck Archipelago, and its immediate ancestor is >8 ka old and virtually restricted to Near Oceania. This indicates that Polynesian maternal lineages from Island Southeast Asia gained a foothold in Near Oceania much earlier than dispersal from either Taiwan or Indonesia 3-4 ka would predict. However, we find evidence in minor lineages for more recent two-way maternal gene flow between Island Southeast Asia and Near Oceania, likely reflecting movements along a "voyaging corridor" between them, as previously proposed on archaeological grounds. Small-scale mid-Holocene movements from Island Southeast Asia likely transmitted Austronesian languages to the long-established Southeast Asian colonies in the Bismarcks carrying the Polynesian motif, perhaps also providing the impetus for the expansion into Polynesia.

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