dna structure 中文意思是什麼
dna structure
解釋
dna結構-
In the present study, aflp ( amplified fragment length polymorphism ) markers was used to examine population of abies yuanbaoshanensis in order to understand the level of population genetic variation and genetic structure. the result would help to evaluate its evolutionary potentiality and the degree of being endangered and could provide scientific basis for making right protection strategy. high - quality dna was extracted using ctab method from those tender leaves of forty - three fully - developed trees in population abies yuanbaoshanensis
本研究選用一種高效的檢測遺傳變異的分子標記? ? aflp技術來分析元寶山冷杉種群的遺傳多樣性，旨在了解該種群在分佈區內的遺傳變異水平和遺傳結構情況；研究結果將有助於更清楚地認識這一瀕危類群的生存潛力和瀕危程度，而且可以為制定何種挽救和保護措施提供科學的依據。 -
Dna specific staining ; namaur method ; chromosome structure ; allium cepa
Dna特異染色nama - ur方法放射環結構洋蔥染色體 -
Because of the special biological structure of bryology, it was very difficult to transfer foreign gene into the protonema or gametophyte by agrobacterium - mediated transformation. protoplasts as acceptor, using direct dna transfer methods such as microprojectile bombardment and peg - mediated transformation is becoming a good way
由於蘚類植物特殊的生物學結構用農桿菌侵染其原絲體或者莖葉體很難實現轉化，以原生質體作受體是蘚類植物轉化的常用途徑。 -
Rapd ( random amplified polymorphic dna ) technique was used to study the genetic structure and genetic differentiation of the natural population and the hatchery stock of chlamys farreri. amplifications with 20 10 - base primers under predetermined optimal reaction yielded 153 reproducible amplified fragments ranging from 200 to 3000bp. the mean proportions of polymorphic amplified fragments of natural population and the hatchery stock were 73. 2 % and 70. 6 % respectively, and the mean hetreozygosities of them were 0. 27 and 0. 26 respectively
在對20個野生櫛孔扇貝和20個養殖櫛孔扇貝的基因組dna的檢測中， 20個隨機引物共擴增出153條清晰可分辨的dna片段，片段大小在200 3000bp之間，其中野生種群和養殖群體多態性片段分別為112和108條，多態位點比例分別為73 . 2 %和70 . 6 % ，雜合度分別為0 . 27和0 . 26 。 -
Molecular genetics came to depend upon studies of the structure and function of dna, rna and protein.
分子遺傳學的形成仰賴于DNA，RNA和蛋白質的結構與功能的研究成果。 -
Based on the structure and function analysis of hirudin, a potent thrombin inhibitor, and some platelet aggregation inhibitors, which contain the recognition sequence argglyasp as their functional motif, two chimeric antithrombotic molecules were designed by introducing rgd sequence to hirudin cterminus. these chimera genes were constructed by pcr and inserted into the expression vector pet21a, the constructs were confirmed by restriction enzyme digestion and dna sequence analysis. these recombinant plasmids were transformed into
經限制酶消化和dna序列分析，證明兩種重組質粒與設計完全一致。由於rgd -水蛭素嵌合基因上游連接了金黃色葡萄球菌蛋白a spa的信號肽序列，在iptg誘導下兩種嵌合分子都獲得了分泌表達，表達產物主要集中在細胞周質空間。 -
We obtain two recessive monogenic salt - tolerance mutants from co60 - - mutagenized arabidopsis thaliana m2 populations. the effect of nacl on the structure of vegetative organa in arabidopsis thaliana was further studied and through a rapd analysis on salt - tolerance mutants of arabidopsis thaliana, a 1200bp dna fragment probably related to the salt - tolerance gene was get
本實驗以模式植物擬南芥（ arabidopsisthaliana ）為材料獲得了隱性單基因抗鹽突變體，並研究了不同濃度的nacl脅迫對擬南芥營養器官結構的影響，進而通過對突變體的rapd分析，獲得了一個與植物抗鹽性有關的1200bp大小的基因片段。 -
Cells only the chromatin or chromosomes are heavily stained, the other components are bleached. after the chromosomes are stained by nama - ur, we have observed that the highest order structure of chromosomes is helical ; while the secondary structure is radically folding. the dna fibres with a diameter of 2530 nm have radically folded into chromatid fibres in a diameter of approximately 250 nm
染色體經dna特異染色后，觀察到其最高層次結構是螺旋的，而次級結構存在著放射環結構，即由直徑為2530 nm的dna纖絲放射狀折疊排列成約250 nm左右的染色單體絲染色單體絲進一步螺旋形成中期染色體結構。 -
The structure of dna and its functions of replication and transcription are compatible.
DNA的結構與它所擔負的復制和轉錄的功能是協調一致的。 -
In this work, some species of palmae cultivated in the xiamen botanical garden had been selected to be analyzed their genetic diversity with rapd ( random amplified polymorphic dna ) technique. according to the result of genomic dna amplified with pcr ( polymerase chain reaction ), genetic distance and similarity between different palm species were calculated on nei " s estimate of similarity and genetic distance. a primary but first time research at the phylogenetic relationships of some genera and species, the molecular classification and identification of some puzzling species of palmae was carried out through upgma ( unweighted pair group mean average ) cluster analysis of the genetic distance together with comparative study of the morphological structure characteristics
本文在初步調查分析了棕櫚科植物在我國的自然分佈、引種馴化情況以及該類植物在廈門地區栽培應用狀況的基礎上，首次採用rapd分子標記技術，對廈門萬石植物園引種的一些棕櫚科植物的遺傳多樣性進行了研究，根據pcr對基因組dna擴增的結果，用nei ' s相似性系數計算了不同植物間的遺傳距離和遺傳一致度，通過對遺傳距離的upgma聚類分析，並結合形態分類的特點，對棕櫚科植物的屬、種間的系統分類關系和一些疑難種的分類鑒定進行了初步研究。 -
Children are born with over 80 % scar tissue at 2 strands of dna ; such scarring will be black streaks in - between the healthy cells within the etheric structure
2股dna的孩子生下來就有超過80 %的傷疤組織；此類傷疤是以太結構內健康細胞中間的黑色條紋。 -
The random amplified polymorphic dna ( rapd ) and inter - simple sequence repeat ( issr ) analysis were used to estimate population genetics of fenneropenaeus chinensis. we analyzed the genetic diversity and genetic structure of the populations, and also studied the genetic divergency among populations and geographic populations. the main results shown as follows : 1
本文以中國對蝦（ fenneropenaeuschinensis ）野生群體為研究對象，採用rapd和issr分子標記技術，進行了群體遺傳學的研究，對中國對蝦野生群體的遺傳多樣性及群體遺傳結構進行了分析，研究了中國對蝦各野生群體之間的遺傳分化情況。 -
Up to now, extensive biological, chromosomal structure and variation, dna polymorphism, breeding application as well as pest control studies have been conducted. alpha - amylase is a functionally important enzyme for silkworm that feed on mulberry leaves
迄今已對野桑蠶進行了廣泛的生物學上的研究、染色體結構及變異研究、 dna多態性研究、家蠶育種上的應用研究以及作為桑園害蟲防治上的研究。 -
Capacity evaluation of different media for isolating predominant phenol - degrading bacteria from activated sludge with community structure - specific dna probes
微生物群落結構探針雜交評價不同培養基從活性污泥分離優勢菌群的能力 -
Since 1953, when biochemists james watson and francis crick identified the structure of deoxyribonucleic acid ( dna, the genetic basis of all living organisms ), the scientific understanding of biological and genetic processes has accelerated dramatically
自從1953年生化學家詹姆斯華生和弗蘭西斯克里克發現了dna （所有生物體的遺傳基礎）結構，人們對生物和遺傳過程的科學理解有了快速的發展。 -
These results indicate that the alteration of cell proliferation and dna synthesis caused by different gnt - v cdna transfection may at least partly result from the modification of n - glycan structure and function of egfr. it seems that the increased 1, 6 glcnac branch on the n - glycans of egfr may benefit to its binding with egf and the resulting tyrosine auto - phosphorylatio n, while the decrease of this branch may prevent these processes
用特異性抗體結合westemblot結果發現，正義或反義gnt一vcdna的轉染並不引起pkb 、 p44 / 42mapk和mek蛋白質表達的變化，而gntv一s / h 」 21細胞pkbt308 、 5473位點磷酸化和免疫沉澱pkb的酪氨酸磷酸化以及以gsk召a /日磷酸化為指標的pkb的活性都較mock細胞增加， gntv一as / h7721細胞中這些指標的變化則相反。 -
Both the frequency and intensity of 1146. 0cm - 1 change largely, etc. discussed and compared the mechanism of these interaction in detail we got some conclusions as following : both zn2 + and cd2 + ions can chelate with po2 - and come into being - po2 - me2 + n7 ( purine ) chelate. as to zn2 + ions, when r2. 0, the quantity of po2 - zn2 + n7 is directly linear with r. when r2. 0, zn2 + ions even can chelate with c at n3 - o2 sites and this chelation will disrupt the h - bond between gc base pairs and make the dna structure unstable. as to cd2 + ions, only when r is within 1. 0 - 1. 5 can this chelation take place and the relation of the quantity of this chelate with r is not easy to conclude
通過對這些變化進行詳細討論和分析，我們得到了如下的結論： zn ~ （ 2 + ）和cd ~ （ 2 + ）都可以跟dna的磷酸基團螯合，形成- po _ 2 ~ - … me ~ （ 2 + ） … n7 （ g ）螯合物，但是前者的螯合跟離子濃度有很大的關系，在摩爾濃度比小於2 . 0時，螯合物的生成量跟r成正比關系，而後者的螯合跟離子的關系不是很明顯，只有當r處於1 . 0至1 . 5之間時，螯合作用才能進行，並且螯合物的生成量跟r之間沒有很明顯的關系存在。 -
In addition, people who use livestock product and dairy on their diets are at very higher risk for certain health problems. these problems include mutation of dna structure of human body, human immunity deterioration, birth defects and cancer
人們食用這些藥殘和重金屬含量超標的畜產品和奶產品，日積月累，將導致人體dna結構發生突變，從而使人體免疫力下降，甚至造成「致畸」 「致癌」等嚴重後果。 -
Using a semantic grid, you could process dna information using one grid, and identify and manipulate proteins related to that dna structure using another grid, simply by feeding information generated by one grid into the other
使用語義網格，您可以使用一個網格來處理dna信息，使用另外一個網格對與這個dna結構有關的蛋白質信息進行識別和處理，這可以通過將一個網格生成的數據提供給另外一個網格來實現。 -
Three kinds of data access objects dao, rdo, ado and windows dna structure of three are discussed at length. integration mode of software system is summarized and a set of software is programmed on this basis to realize the database management of experiment data. in addition, another set of vod management system software is programmed to ensure its normal operation and effective management
本文回顧了數據管理方式的發展歷史，對數據庫，特別是sqlserver2000進行了比較詳細的介紹，討論了三種數據訪問對象： dao 、 rdo 、 ado ，詳細討論了windowsdna三層結構，對軟體系統集成方法進行了概述，然後在此基礎上編制了一套針對實驗數據的數據庫管理軟體，實現了對實驗數據的數據庫管理，另外還在導師原有科研工作的基礎上，進行理論分析，並改進編制了一套視頻點播管理系統軟體，實際運行證明，可保證視頻點播系統的正常運轉和有效管理。
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