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   水平进化 的翻译结果: 查询用时:0.013秒
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水平进化
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  “水平进化”译为未确定词的双语例句
     The X chromosome has not shown the same regulation as autosomes and it takes on stable evolution level. The X chromosome has a different evolution mode.
     整个X染色体具有稳定的进化水平,进化模式与常染色体不同.
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  相似匹配句对
     C were measured by the method of radioimmunology.
     C的水平
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     Horizontal Gene Transfer and Genome Evolution
     水平基因转移与基因组进化
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     On one side, the molecular research studies the origin of the lives;
     分子进化是达尔文进化论在分子水平上的延伸。
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     On the Evolution of the Spider Web
     蛛网的进化
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     On Evolution of Nature Value
     自然价值的进化
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  horizontal evolution
In this process of horizontal evolution natural vector DNA molecules are often involved.
      
Tailed phages are the result of both vertical and horizontal evolution and are thus fascinating objects for the study of molecular evolution.
      
In the second part of the paper, we focus on the explanatory potential of horizontal evolution.
      
On the other hand, horizontal evolution offers no direct mechanism to permit the genetic or regulatory linkage of enzymes within a pathway.
      
Proposals accounting for the evolutionary origin of metabolic pathways Property Vertical evolution Horizontal evolution 1.
      


30-31 loci in four samples of three Clarias species were compared, with starch gel electrophorosis, in order to determine their genetic variation and systematic relationships. The mean number of alleles per locus (Na) ranges 1.01-1.39; percentage of polymorphic loci (P0.99) 3.33-16. 13%; mean heterozygosity observed 9Ho) 0.004-0. 072; expected (He) 0. 004-0. 064. All three species express a very low level of genetic variation ,among them Clarias lazera expresses a higher level. The polymorphic loci of Clarias...

30-31 loci in four samples of three Clarias species were compared, with starch gel electrophorosis, in order to determine their genetic variation and systematic relationships. The mean number of alleles per locus (Na) ranges 1.01-1.39; percentage of polymorphic loci (P0.99) 3.33-16. 13%; mean heterozygosity observed 9Ho) 0.004-0. 072; expected (He) 0. 004-0. 064. All three species express a very low level of genetic variation ,among them Clarias lazera expresses a higher level. The polymorphic loci of Clarias batrachus appear to have been reduced as the result of limitation of sample collection and founder effect of cultivated population.The comparison of genetic similarities (I) and genetic distances (D) among the four samples represents three levels of evolutionary divergence: 1) Comparison between two populations of Clarias fuscus without any reproductive isolation between them, indicate a very high degree of genetic similarity (I = 0.999). 2) Comparison between sibling species (C. fuscus and C. batrachus), despite their morphological similarity, they are genetically quite different, eleven loci are virtually fixed for different alleles. 3) Comparisons between morphologically different species (C. lazera and C. fuscus; C. lazera and C. batrachus), exhibit a very high degree of genetic differentiation (D = 0.999 and 0. 818). The systematic relationship between C. fuscus and C. batrachus are closer than compared to C. lazera.

为确定三种胡子鲶(胡子鲶Clarias fuscus、两栖胡子鲶C.batrachus和革胡子鲶C.lazera)的遗传变异及系统分类关系,采用淀粉凝胶电泳技术比较了三种胡子鲶4个样本的30—31个基因座位。每个座位观测到的平均等位基因数(Na)为1.01—1.39;多态座位百分比P_(0.99)为3.33—16.13%,平均杂合度观测值(Ho)为0.004—0.072;期望值(He)为0.004—0.064。3个种的遗传变异均较小,其中以革胡子鲶的遗传变异较其它两种大。两栖胡子鲶因采样的限制和养殖群体的奠基者效应而引起多态基因座位减少。4个样本的遗传相似性(I)和遗传距离(D)的比较,表现了3个水平的进化趋异;1)胡子鲶的两个没有生殖隔离的群体间的比较,彼此具有高度的遗传相似性(I=0.999);2)胡子鲶和两栖胡子鲶这对姐妹种间的比较,尽管它们在形态上难以分辨,但在遗传上仍有11个基因座位各具种的特异性;3)外表区别明显的种间比较,彼此表现了很大的遗传分异(D=0.999和0.818)。可见胡子鲶与两栖胡子鲶之间的系统分类关系较它们与革胡子鲶间的关系更密切。

The nucleotide sequences of rDNA ITS and 5 8S ribosome DNA from several representative species of Cordeceps were determined and compared with published sequences. Based on sequence data, the phylogenetic trees were constructed using the NJ and Fitch methord.Diversity in the phylogenetic tree was found for Cordyceps species,C.sinensis,C.Militaris,C.gunnii,C.ophioglossoide were closely related to Hirsutella sinensis, Beauveria bassiana,Metarhizjum flavovirde,Cyphomyrmex minutus respectively. rDNA ITS sequences...

The nucleotide sequences of rDNA ITS and 5 8S ribosome DNA from several representative species of Cordeceps were determined and compared with published sequences. Based on sequence data, the phylogenetic trees were constructed using the NJ and Fitch methord.Diversity in the phylogenetic tree was found for Cordyceps species,C.sinensis,C.Militaris,C.gunnii,C.ophioglossoide were closely related to Hirsutella sinensis, Beauveria bassiana,Metarhizjum flavovirde,Cyphomyrmex minutus respectively. rDNA ITS sequences analysis indicated Cordyceps species are not a monophyletic group, and presented new insight into traditional concepts of the genus Cordyceps.

测定了虫草属 (Cordyceps)代表种及其相关无性型菌 (anamorphicstate )核糖体rDNAITS区序列 ,并从国际分子生物学数据库中调取相关序列 ,以Phylip35分析软件构建序列距离矩阵和分子系统发育树图 ,结果表明 :虫草属各个种之间ITS区序列差别比较大 ,不能形成一个单系的类群 .冬虫夏草 ,古尼虫草 ,蛹虫草 ,大团囊虫草在系统发育上分别与丝孢纲(Hyphomycetes) ,束梗孢目 (Stilbelaes)的中国被毛孢 ,丝孢目 (Hyphomycetales)的黄绿绿僵菌 ,丝孢目 (Hyphomycetales)的球孢白僵菌 ,担子菌纲的Cyphomyrmexminutus非常接近 ,在树图上分别处于相对独立的分支 ;说明形态学上划分的虫草属并非一自然发生的类群 ,也说明了虫生真菌形态与基因水平进化的不一致性 .

Antonymy which expresses the contrary,opposite conception arises from the contrary,opposition of things,actions and their attributes.It exists widely in the literature of the past dynasties. In the evolution and development of Chinese language from Yin Shang Dynasty to the present antonymy gradually evolves,develops and enlarges.Researching antonymy about oracular inscriptions on tortoise shells and bones and looking for the headstream of antonymy can explore one of the aspects about the evolution and development...

Antonymy which expresses the contrary,opposite conception arises from the contrary,opposition of things,actions and their attributes.It exists widely in the literature of the past dynasties. In the evolution and development of Chinese language from Yin Shang Dynasty to the present antonymy gradually evolves,develops and enlarges.Researching antonymy about oracular inscriptions on tortoise shells and bones and looking for the headstream of antonymy can explore one of the aspects about the evolution and development of the way of the expression of language and know one of the facets about the evolution and development of the level of human understanding about the world.

反义词,表达相反、相对的概念,乃缘于事物与行为及属性等原本相反、相对,其广泛存在于历代文献。由商殷至后世,在汉语发展中,反义词逐渐演变、丰富。研究甲骨刻辞的反义词,溯源寻流,可探索语言表现手段演化之一隅,并窥见人们认识水平进化之一斑。

 
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