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等位基因多样性
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  allelic diversity
     Population Structure of Core Inbred Lines and Allelic Diversity of rab17, a Candidate Gene for Drought Tolerance in Maize
     玉米核心自交系群体结构及耐旱相关候选基因rab17的等位基因多样性分析
短句来源
     The genetic variation based approach chooses populations with high genetic variation, especially allelic diversity, for priority conservation. This approach does not consider genetic distinctiveness. Some distinctive alleles in populations with low genetic variation may not receive effective conservation based on this approach.
     基于遗传变异的方法主要是根据遗传变异程度 (尤其是等位基因多样性 )来确定优先保护的顺序 ,但忽略了种群之间的遗传差异性 ,这容易使得存在于遗传变异程度较低的种群中的特有等位基因得不到有效保护。
短句来源
     Understanding with greater clearness the characteristics of recombination within the human leucocyte antigen(HLA) is of deep significance to gaining an insight into the evolutionary process of shaping HLA allelic diversity and ultimately the human resistance against diverse pathogens.
     深入研究人类白细胞抗原(humanleucocyteantigen,HLA)基因重组的分子生物学特性,对于揭示其等位基因多样性形成的演化机理以及人体所具有的抵抗多样致病微生物的防御能力具有重要意义。
短句来源
  allele diversity
     Analysis of molecular variance (AMOVA) and principal component (PC) analysis of the haplogroup distributions suggested highly different allele diversity between group Ⅰ including Hezhen, Mongolian, Sibo and group Ⅱ including Hui, Fujian Hans, Sichuan Hans.
     遗传分子变异分析和单体群分布的主成分分析结果显示 ,赫哲族、蒙古族、锡伯族以及福建汉族、四川汉族、回族两大组群体之间等位基因多样性显著不同。
短句来源
  “等位基因多样性”译为未确定词的双语例句
     And then on the base of gliadin study, 12 wheat landraces were evaluated through SSR to study their group structures.
     在醇溶蛋白研究的基础上,选取有代表性的12 份小麦地方品种,采用SSR 分子标记技术从基因组水平研究小麦地方品种内的等位基因多样性,阐明我国的小麦地方品种内部的变异情况,研究其群体遗传结构。
短句来源
     The Diversity of Alleles within Wheat Landraces in China
     中国小麦地方品种内的等位基因多样性研究
短句来源
     Through those data, we indicate that recombination phenomena is limited by selected pressure, the number of various amplified esterases allele, and the frequency of individual allele.
     该现象可能是蚊虫受到杀虫药剂的选择压力、等位基因多样性和等位基因型频率的影响。
短句来源
     Allozyme data for 13 loci of 6 enzymes demonstrate high levels genetic variation within populations,the mean percentage of polymorphic loci(P)was 56. 9%. The mean number of alleles per locus(A)was 1. 62. Mean observed heterozygosity(Ho)was 0. 105,and mean expected heterozygosity(He)was 0. 164. Half of the Wright's F-statistics showed negative values.
     分析6个酶系统,共获得了13个基因位点, 结果表明:葫芦苏铁具有较高水平的遗传变异性,多态位点百分率(P)为56.9%,等位基因平均数A=1.62,等 位基因多样性指数Ho=0.105,He=0.164,居群杂合体过量的位点为50%。
短句来源
  相似匹配句对
     The Diversity of Alleles within Wheat Landraces in China
     中国小麦地方品种内的等位基因多样性研究
短句来源
     Genetic Diversity
     基因多样性
短句来源
     The Diversity of Children's Literature
     儿童文学的多样性
短句来源
     Polymorphism Research on the Distribution of Four HLA Alleles in Five Chinese Populations
     4个HLA等位基因在5个民族中分布的多样性研究
短句来源
     ALLELE AT THE D LOCUS-D~u
     D位座上的等位基因—D~u
短句来源
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  allelic diversity
The allelic diversity indices (Dg) were determined for all loci; they varied from 0.23 to 0.72.
      
In both groups, the lines significantly differing in plant height could be differentiated, because of allelic diversity of the additional genes controlling this trait along with the Ddw gene.
      
Domestic varieties (except Xingguo red carp) showed less genetic diversity than the Yangtze River wild common carp in terms of allelic diversity.
      
In our research, to understand the allelic diversity of the MdαE7, the gene was partially sequenced from four different housefly strains from different localities (Guatemala, Manhattan (USA), Colombia (USA), and Thailand).
      
Allelic diversity in a set of 99 spring and winter barley varieties intended for different use (malting, cereal, and valuable) was studied.
      
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  allele diversity
Allele diversity RS ranged from 9.70 in Southeastern Bashkirs to 18.00 in Chuvash, averaging 13.79 ± 2.12.
      
Within-population variation accounted for most of the allele diversity; FSTaveraged over loci was 0.052.
      
An integral model of the evolution of a Mendelian one-locus population of diploid organisms with continual allele diversity developing under density-limiting conditions or without density limitation has been proposed and analyzed.
      
BoLA class I allele diversity and polymorphism in a herd of cattle
      
Allele diversity at the STRP was tightly linked to haplotype background.
      
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Three hundred and seven accessions of adzuki bean Vinga angularis (Willd.) Ohwi & Ohashi germplasm were assayed by four isozymes, esterase(EST), peroxidase(PER), malate dehydrogenase(MDH) and superoxide dismutase(SOD). Six allzymic loci and 33 alleles were detected. All the allzymic loci were polymorphic. The frequency distribution of allzymic loci in wild species was higher comparing with Chinese landraces while the frequency distribution of Chinese landraces was higher comparing with alien varieties. The average...

Three hundred and seven accessions of adzuki bean Vinga angularis (Willd.) Ohwi & Ohashi germplasm were assayed by four isozymes, esterase(EST), peroxidase(PER), malate dehydrogenase(MDH) and superoxide dismutase(SOD). Six allzymic loci and 33 alleles were detected. All the allzymic loci were polymorphic. The frequency distribution of allzymic loci in wild species was higher comparing with Chinese landraces while the frequency distribution of Chinese landraces was higher comparing with alien varieties. The average heterozygosity of six allzymic loci was 0.651 and the cultivated varieties had a higher heterozygosity(0.664) comparing with wild species(0.636). The probable reason was that mutation occurred during adzuki bean evolution. Five groups were clustered based on the isozyme data and almost wild accessions were clearly clustered into one group. The genetic distance was significant among groups. It appeared that there was no obvious association between allzymic diversity and different adzuki bean geographical regions.

对 5 8份野生小豆和 2 4 9份栽培小豆种质资源进行了酯酶 (EST)、过氧化物酶 (PER)、苹果酸脱氢酶(MDH)和超氧歧化酶 (SOD)的检测分析 ,共检测到 6个基因位点 ,33个等位基因。小豆等位酶基因在野生种中的分布频率高于栽培种 ,在国内地方种中的分布频率高于日本地方种。 4种同工酶的 6个基因位点的平均杂合度为0 .6 5 1,其中野生小豆的杂合度 (0 .6 36 )低于栽培小豆 (0 .6 6 4 ) ,说明小豆在长期的驯化和栽培过程中已经发生了遗传上的变异。依据同工酶谱带信息 ,把供试种质聚类并划分为 5个组群 ,野生种明显聚为 1类 ,栽培种聚为 4类 ,类群之间存在明显的遗传差异 ,但同工酶等位基因的多样性与地理区域的差异似乎看不出明显的相关性。

Due to differences in the significance of populations, limits in funds for species conservation and conflict between conservation and economic development, deciding what and where to conserve is an essential step in managing important species, especially endangered species and wild relatives of crops and domesticated animals. There are three approaches to identifying populations for priority conservation of important species, including genetic variation based, genetic distinctiveness based and genetic contribution...

Due to differences in the significance of populations, limits in funds for species conservation and conflict between conservation and economic development, deciding what and where to conserve is an essential step in managing important species, especially endangered species and wild relatives of crops and domesticated animals. There are three approaches to identifying populations for priority conservation of important species, including genetic variation based, genetic distinctiveness based and genetic contribution based. The genetic variation based approach chooses populations with high genetic variation, especially allelic diversity, for priority conservation. This approach does not consider genetic distinctiveness. Some distinctive alleles in populations with low genetic variation may not receive effective conservation based on this approach. In contrast, the distinctiveness based approach, such as those based on evolutionarily significant units, chooses distinct populations for priority conservation. The genetic contribution based approach, a synthesis considering genetic variation and distinctiveness, is the most appropriate approach in determining which populations need priority conservation. We propose that this work should be considered urgent in China for some endangered or rare species.

由于同一物种不同种群的重要性不同、用于物种保护的资金有限以及保护与发展经济之间的矛盾 ,因此对于重要物种 (尤其是濒危种类以及农作物和驯化动物的野生近缘种 )需要确定保护什么以及保护哪儿。目前确定优先保护种群的方法主要有 3类 ,分别为基于遗传变异、基于遗传差异性和基于遗传贡献率的方法。基于遗传变异的方法主要是根据遗传变异程度 (尤其是等位基因多样性 )来确定优先保护的顺序 ,但忽略了种群之间的遗传差异性 ,这容易使得存在于遗传变异程度较低的种群中的特有等位基因得不到有效保护。而基于遗传差异性的方法(如确定进化显著单元 )则是从遗传分化程度的角度考虑优先性 ,即独特性越强的种群越具有保护价值。基于遗传贡献率的方法由于综合考虑了遗传多样性和差异性 ,最适合于确定哪些种群需要优先保护。我国开展此类研究十分必要。

Resistance to organophosphate (OP) insecticide in Culex pipiens is caused by over-produced nonspecific esterase. The ester super-locus is one of the main genome areas in this resistance, and presents multiple resistance alleles. We study three populations (Guangzhou, Foshan, Zhengzhou)of C. pipiens by starch gel electrophoresis, and find that there exist recombination phenomena between two amplified esterases allele in China. Through those data, we indicate that recombination phenomena is limited by selected...

Resistance to organophosphate (OP) insecticide in Culex pipiens is caused by over-produced nonspecific esterase. The ester super-locus is one of the main genome areas in this resistance, and presents multiple resistance alleles. We study three populations (Guangzhou, Foshan, Zhengzhou)of C. pipiens by starch gel electrophoresis, and find that there exist recombination phenomena between two amplified esterases allele in China. Through those data, we indicate that recombination phenomena is limited by selected pressure, the number of various amplified esterases allele, and the frequency of individual allele. This is the first report of recombination phenomena between two different amplified esterase alleles observed in field populations, and provides a good model to research resistant evolution.

羧酸酯酶 (carboxylesterases)的过量产生是库蚊Culexpipiens对有机磷杀虫剂 (OP)产生抗性的主要机制。由est 3和est 2组成的酯酶超级基因座 (estersuper locus)的基因扩增是引起酯酶基因扩增的主要遗传学基础。通过淀粉电泳研究了采自广州、佛山、郑州的库蚊野生蚊虫种群 ,发现在这些种群中存在着扩增等位基因重组现象。该现象可能是蚊虫受到杀虫药剂的选择压力、等位基因多样性和等位基因型频率的影响。这将提供一个研究抗性进化的自然模型。

 
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