• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Royal Society Proceedings B: Biological Sciences >Mitochondrial lineages in Ladin-speaking communities of the eastern Alps.
【24h】

Mitochondrial lineages in Ladin-speaking communities of the eastern Alps.

机译：阿尔卑斯山东部讲拉丁语的社区中的线粒体谱系。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

European mitochondrial alleles cluster into five haplogroups. Haplogroup 2 is rare in general, but represents more than half of the few known sequences among Ladin speakers of the Alps. Here we describe DNA diversity in control region I of the hypervariable D-loop in 43 Ladins, and in 25 Italian speakers. Analysis of these data, and of previously published sequences, confirms a high degree of differentiation among Ladins and their geographical neighbours. This cannot be regarded as a simple effect of isolating factors, geographic or linguistic, as diversity is high within Ladin communities too. Rather, allele genealogies, population trees, and principal component analysis suggest a relationship between Ladin and Near Eastern samples. Two evolutionary hypotheses seem compatible with these findings. The view whereby Ladins could be descended from Palaeolithic inhabitants of the Alps is supported by the identification, in this study, of the probable ancestral haplotype of group 2, never previously observed in central Europe. Alternatively, a comparatively recent, Neolithic immigration of the ancestors of current Ladin speakers seems consistent with recent linguistic theories. In both cases, the number of lineages present, and their extensive diversity, are not compatible with a serious bottleneck in the Ladin population's history.
机译：欧洲线粒体等位基因聚集成五个单倍群。单倍群2通常很少见，但代表阿尔卑斯山讲拉丁语的少数已知序列的一半以上。在这里，我们描述了43个拉丁语和25个意大利语国家的高变D环控制区域I中的DNA多样性。对这些数据以及先前发布的序列进行的分析证实了拉丁人及其地理邻居之间的高度差异。这不能被视为隔离地理或语言因素的简单效果，因为拉丁社区内的多样性也很高。而是，等位基因家谱，种群树和主成分分析表明，拉丁样品与近东样品之间存在关联。两种进化假说似乎与这些发现相吻合。在这项研究中，对第2组可能的祖先单倍型的鉴定支持了拉丹人可以从阿尔卑斯山的旧石器时代的居民传承的观点。另外，现任拉登讲者的祖先的较新近的新石器时代移民似乎与最近的语言理论一致。在这两种情况下，当前血统的数量及其广泛的多样性都与拉登人口历史上的严重瓶颈不符。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号