族群
- 与 族群 相关的网络例句 [注:此内容来源于网络,仅供参考]
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During the postgenomics era the information about genomic sequence and gene functions provides a new foundation for evolutionary biology and ecology As the first whole-genome sequenced plant Arabidopsis thaliana and its wild relatives have played a critical role in understanding the evolution of genomics and speciation Both A halleri and A lyrata are closely related to the model species A thaliana A halleri ssp gemmifera occurs in northeastern China Japan and Taiwan; while its sister A halleri ssp halleri is mainly distributed in Europe Geographical barriers such as Tienshan Mountain Range isolate these intraspecific sisters Likewise A lyrata ssp kamchatica and ssp lyrata occur in East Asia and North America respectively Such distribution patterns seem to be consistent with allopartic speciation The comparison between ancestral and extant polymorphism by multilocus can be informative about the population genetics of speciation In this study we collected and analyzed DNA sequences of 98 genes from four wild relatives of A thaliana A halleri ssp gemmifera A halleri ssp halleri A lyrata ssp kamchatica and A lyrata ssp lyrata The ancestral states of these four species were compared to each other in terms of level of genetic variation However the ancestral species at the time of speciation were substantially more polymorphic than the extant geographical populations The observations are not fully compatible with speciation by strict allopatry At some species pairs parapatric speciation seems more reasonable in speciation of Arabidopsis The 98 gene sequences are also used for the congruence test between gene genealogy and species phylogeny Only 28 genes support the species phylogeny but there are 23 genes supports another major genealogy { lyrata} thaliana Based on the phylogenetic position change of A lyrata ssp kamchatica and Ks value for each species pair suggested the recent directional gene flow between A halleri ssp gemmifera and A lyrata ssp kamchatica
阿拉伯芥是第一个完成基因体定序的开花植物,其基因体资讯提供植物学研究的重要依据;在解析阿拉伯芥属物种的亲缘关系以及种化机制等重要的演化议题时,阿拉伯芥近缘的野生物种自然成了不可或缺的关键;跟阿拉伯芥近缘的物种包括A halleri及A lyrata,其中A halleri ssp gemmifera主要分布於中国东北、日本以及台湾,与近缘的A halleri ssp halleri其分布於欧洲隔著天山及大陆的障蔽,而A lyrata ssp kamchatica主要分布於东北亚及台湾,与分布於北美五大湖的A lyrata ssp lyrata被北极圈所分隔,这样的分布模式暗示异域种化的可能。藉由多基因分析比较祖先物种与现生物种遗传歧异度的相关可提供讯息探讨种化时期的族群遗传结构,本研究针对A halleri ssp gemmifera、A halleri ssp halleri及A lyrata ssp kamchatica、A lyrata ssp lyrata四个物种,两对互为亚种的姊妹群,以阿拉伯芥为外群进行研究,在四个物种完成98个同源基因的分子序列,利用套装软体MCMCcoal来估算祖先物种的遗传变异,亦估算现生物种的核苷酸歧异度,观察到?多物种配对中祖先物种遗传多型性大於现生物种DNA歧异度,显示异域种化模型并无法完全解释阿拉伯芥属物种的种化模式,在某些物种配对间邻域种化模式应比异域种化更为可能;在基因树与物种树的比较,98个基因片段的亲缘模式只有28个是与已知物种树一致的,有23个基因其树状图支持{ lyrata} thaliana的型式,藉由kamchatica位置的变化以及估算各物种配对间的平均同义置换率,推测在A halleri ssp gemmifera与A lyrata ssp kamchatica间具有近代的单方向基因交流。
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Made by different groups of Amish people in the United States.
展览包括,30种不同颜色的棉被,由美国不同族群的阿米什人制作的。
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Chapter two, while describing the general conditions of my fieldwork place, also reveals the historical context from which the Huihave developed into the current institutionalized minzu and shows the living patterns and social contexts that allow the Hui to maintain their identity despite anthropologically problematic issues of territory and economy -to help us understand that this is their common and shared homeland with other ethnic groups.
在第二章对田野点概况的描述里,我从历史来追溯他们对当地回回族群的遥远记忆;从空间、经济等分别展示了西关回族的居住模式和社会生活场景——这是他们共同的家园。
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In the third chapter we will deal with the discourse of Lewis Gordon on Anti-black racism, whereas in the fourth chapter the colonial thought of Franz Fanon will be explored.
第四章则交代二十世纪后殖民主义重要代表思想家,出身於加勒比海法属殖民地的法农有关黑白关系的讨论,以便进一步落实族群关系问题的探讨。
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Within the group of chlorinated aromatics, which can be toxic to some organisms, are the infamous dioxins.
在氯苯环的族群中,大多对生物都具有毒性,其中最有名的就是戴奥辛。
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Currently, an astounding 40% of this regional group lives in California.
目前,这区域的族群有高达40%居住在加州。
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On the other hand , all these ethnic communities will hold celebrations through auspice yearly or quarterly.Therefore, almost every week there is one or more nationalities sharing their cultural experiences.
此外,所有这些族群团体每年或每季都会赞助举行庆典活动,因此几乎每个礼拜都会有一个或多个民族和其它纽约人共同分享他们的文化经验。
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Among the Austronesian in Taiwan, Pingpu ethnic groups are very particular. There are some different sub-ethnic groups.
在台湾诸多的南岛语民族中,平埔族是一个较为独特的族群。
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These village dwellers are of southern Mongoloid type and Austronesian language group.
这些村庄居民属于南蒙古人种和南岛语系族群。
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We know from the history of this region that Bantu speakers migrated into this region recently—probably within the past 1,000 years—from parts of West Africa near the equator.
从这个地区的历史,我们知道,说班图话的族群是最近才从接近赤道的西非迁到南非,也许还不到1000年。
- 推荐网络例句
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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.
随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。
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But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.
不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。
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Closes the eye, the deep breathing, all no longer are the dreams as if......
关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。