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首页> 外文期刊>Journal of genetics >Genetic admixture studies on four in situ evolved, two migrant and twenty-one ethnic populations of Tamil Nadu, south India
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Genetic admixture studies on four in situ evolved, two migrant and twenty-one ethnic populations of Tamil Nadu, south India

机译：对印度南部泰米尔纳德邦的四个原位进化，两个移民和二十一个族裔群体的遗传掺和物研究

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We analysed the genetic structure of a??1000 samples representing 27 ethnic groups settled in Tamil Nadu, south India, derived from two linguistic families (Dravidians and Indoa€“Europeans) representing four religious groups (Hinduism, Islam, Christianity and Jainism) using 11 mtDNA markers. Out of 27 ethnic groups, four are in situ populations (Anglo-Indian, Labbai Muslim, Nadar Christian and south Indian Jain) and two are migrants (Gypsy and north Indian Jain) from north India to Tamil Nadu, and 21 are native ethnic groups. Six of the markers we used were monomorphic (HaeIII663, HpaI3592, AluI5176, AluI7025, AluI13262, 9-bp deletion) and five markers were polymorphic (DdeI10394, AluI10397, HinfI12308, HincII13259 and HaeIII16517). Haplogroup frequencies, genetic affinities and admixture analysis are based on the genotype data of polymorphic markers observed in these populations. Haplogroup frequencies indicate that various ethnic groups entered Tamil Nadu during different time periods. Genetic affinities and admixture estimates revealed that the ethnic groups possessing advanced knowledge of farming cluster in a branch (C), and could be the late arrived settlers as agriculture, was introduced to this region at about 5 to 3 thousand years ago. In situ ethnic groups appear to have arisen at various times as a result of the prevailing dominant socio-cultural forces. Hierarchical Hindu caste system created many ethnic groups in the history of its existence; some of them became isolated for considerable period of time. Over all, among Tamil ethnic groups, in spite of caste systemsa€? rigidity, built in flexibility in the system in the form of hypergamy and hypogamy had allowed maternal gene flow between them.
机译：我们分析了代表来自印度南部泰米尔纳德邦的27个种族的1000个样本的遗传结构，该样本来自两个语言家族（德拉威人和印支－欧洲），代表四个宗教团体（印度教，伊斯兰教，基督教和Ja那教）。 11种mtDNA标记。在27个族裔中，有4个是当地居民（印度裔，拉拜族，纳达尔·克里斯蒂安和南印度Ja那教），两个是从印度北部到泰米尔纳德邦的移民（吉普赛人和北印度Ja那教徒），其中21个是土著。我们使用的六个标记是单态的（HaeIII663，HpaI3592，AluI5176，AluI7025，AluI13262、9 bp缺失），五个标记是多态的（DdeI10394，AluI10397，HinfI12308，HincII13259和HaeIII16517）。单倍群频率，遗传亲和力和掺合物分析是基于在这些人群中观察到的多态性标记的基因型数据。单倍频率表明不同种族在不同时期进入泰米尔纳德邦。遗传亲和力和掺混物估计表明，具有较高农业知识的种族群体在一个分支机构中（C），并且可能是农业传入较晚的定居者，大约在5至3000年前被引入该地区。由于占主导地位的社会文化力量，原地出现在各个时期的种族群体。等级的印度教种姓制度在其存在的历史上创造了许多种族。其中一些人在相当长的一段时间内变得孤立。总体而言，尽管有种姓制度，但在泰米尔族裔群体中？刚性，以一夫多妻制和一夫多妻制的形式建立在系统的灵活性中，使母体基因能够在它们之间流动。

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