biological variation 中文意思是什麼

biological variation 解釋
生物變異
  • biological : adj. 生物學（上）的。 a biological test 生物學檢驗。n. 【藥學】生物製品，生物制劑。adv. -ly 生物學地，生物學上。
  • variation : n 1 變化，變動。2 變量，變度，偏差。3 【語言】語尾變化；變體，異體；【數學】變分，協變；順列；【...
  1. This paper summarized the inheritance and variation of main biological and economic characters in rape progeny from hybridization and distant crossing, inquired into the selective mating of hybrid parent and the selection of hybrid progeny, analyzed the problems which had existed in rape distant crossing breeding, and put forward some ideas for accelerating the stability of characters in distant crossing progeny

    概述了油菜品種間雜交後代及遠緣雜交後代主要生物學性狀和經濟性狀的遺傳變異現象；對雜交親本的選配及雜種後代的選擇進行了探討，分析了油菜遠緣雜交育種中存在的問題，就加速遠緣雜種後代的穩定提出了一些見解。
  2. Biological variation resulting from recombination, mutation, and selection

    生物多樣性來自於基因的重組、突變、和篩選。
  3. The topics include : structure and function of genes, chromosomes and genomes, biological variation resulting from recombination, mutation, and selection, population genetics, use of genetic methods to analyze protein function, gene regulation and inherited disease

    主題包括：基因、染色體與基因組的結構和功能；來自於基因重組、突變和篩選的生物變異；族群遺傳學；運用遺傳學的方法分析蛋白質的功能，基因的調控和遺傳性疾病。
  4. 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。
  5. The result shows that a vvibdv strain was obtained, the above work lay a important role for further studying on the molecular biological mechanism of antigenic drift and virulence variation of ibdv, molecular epedimiology, it also provided the basis for recombinant and gene deleted vaccine of ibdv

    本實驗可以幫助我們進一步探討ibdv抗原性漂移和毒力變化的分子生物學機制，追溯ibdv的起源，理解病毒的傳播方式。同時也為研製開發基因重組疫苗和缺失疫苗打下一定的基礎。
  6. By comparing the biological characteristics of original normal filament, linear filament and the curved filament retransited from linear filament, certain evidence of the morphologic variation regulated by a special transposon are detected on the level of protein and dna, which will help us to discover the mechanisms of this morphologic variation on molecular genetics level and solve the problem in production of spirulina in large scale

    在比較了正常藻絲體、變直藻絲體及回復正常螺旋形態的藻絲體一組材料生物學特性的基礎上，進一步在蛋白質及dna水平上找到了轉座子調控此形態變異的某些證據，為闡明螺旋藻形態變異與重建的分子遺傳學機制以及解決螺旋藻大規模生產的實際問題提供理論依據。
  7. Abstract : biological invasions are a continuous feature of a non - equilibrium world, ever more so as a result of accidental and deliberate introductions by mankind. while many of these introductions are apparently harmless, others have significant consequences for organisms native to the invaded range, and entire communities may be affected. here we provide a survey of common models of range expansion, and outline the consequences these models have for patterns in genetic diversity and population structure. we describe how patterns of genetic diversity at a range of markers can be used to infer invasion routes, and to reveal the roles of selection and drift in shaping population genetic patterns that accompany range expansion. we summarise a growing range of population genetic techniques that allow large changes in population size ( bottlenecks and population expansions ) to be inferred over a range of timescales. finally, we illustrate some of the approaches described using data for a suite of invasions by oak gallwasps ( hymenoptera, cynipidae, cynipini ) in europe. we show that over timescales ranging from 500 10000 years, allele frequency data for polymorphic allozymes reveal ( a ) a consistent loss of genetic diversity along invasion routes, confirming the role of glacial refugia as centres of genetic diversity over these timescales, and ( b ) that populations in the invaded range are more subdivided genetically than those in the native range of each species. this spatial variation in population structure may be the result of variation in the patchiness of resources exploited by gallwasps, particularly host oak plants

    文摘:生物入侵是不均衡世界的一個永恆話題，尤其是當人類有意或無意地引入物種后.很多引入顯然是無害的，但另外一些則有著嚴重的後果，會給入侵地的生物以至於整個生物群落造成影響.本文總結了分佈區擴張的常見模式，概述了它們對遺傳多樣性和種群結構式樣所造成的影響.描述了如何根據以一批遺傳標記所得到的遺傳多樣性式樣來推斷入侵途徑，來揭示伴隨擴張選擇和漂變在形成種群遺傳樣式中的作用.本文對日益增多的群體遺傳學方法進行了總結，這些技術可以用來在不同的時間尺度上推斷種群規模所發生的巨大變化（瓶頸效應及種群擴張） .最後，我們以歐洲櫟癭蜂（膜翅目，癭蜂科，癭蜂族）一系列入侵的數據為例對一些方法進行了說明.從500 10000年的時間尺度上，多態的等位酶位點上等位基因頻率的數據表明: 1 ）遺傳多樣性沿入侵路線呈不斷下降的趨勢，支持了冰河期避難所作為遺傳多樣性中心的作用; 2 ）入侵地區的種群與該物種原產地的種群相比，遺傳上的分化更為強烈.這種種群結構在空間上的變異可能是被櫟癭蜂開發的資源尤其是櫟樹寄主在斑塊上出現變異的反映
  8. Study on biological characteristics of cunninghamia laceolata hk. cv. luotian - a superior variation of cunninghamia laceolata

    羅田垂枝杉生物學特性研究
  9. And also the biological parameters and the climatologic data, such as the wind variation, irradiance, net heat flux, need to be improved to get a more realistic result

    另夕，極型奶姑物衛11條什所采川rl勺風場、光以z引l收、熱皿得、蒸發。
  10. Genetic algorithm based on the conception of biological evolution designs a series of process to optimize the solution. these processes include gene combination 、 crossover 、 variation 、 natural selection. in these procedures, eliminate the bad gene through the principle of “ survival of the fittest ” and develop the solution to better direction

    遺傳演算法是基於生物進化的概念設計了一系列過程來達到優化的目的。這些過程包括:基因組合、交叉、變異、自然選擇。在這些過程中，通過「優勝劣汰」的原則來淘汰掉解較差的基因，使得解朝著好的方向發展。
  11. So there are both continuous and discrete in the progress ( id fact, we always meet such a progress with both continuous and discrete variation during studying the biological model ). then we can model the progress by a dynamic equation on tune scales to solve it easily. since the last decade, there have been much advance on the dynamic equations on time scales

    那麼這個過程既有連續的又有離散的（事實上，在描述生物種群狀態的生物模型中我們經常會遇到象這樣的一個變化過程中同時具有連續的和離散的變化） ，我們就可以用一個時間模上的動力學方程來描述，進而用時間模上的運算對此加以解決，那麼問題處理起來就簡單方便了。
  12. The potential relationship between variation of v3 loop in crf01 - ae strains of hiv type 1 from guangxi and virus biological phenotype

    3環序列變異及其與生物表型的關系
  13. Therefore, we need more concrete function to better discribe the variation of some biological populations in our real world. the two important indexes r ( t ) and k ( t ) of logistic equation are asmptotic periodic function, and discussed by author. the asmptotic solution of the asmptotic periodic logistic function is obtained

    因而，為了更好地刻劃客觀世界，我們需要用更加符合客觀實際的函數來描述生物種群的變化，於是作者對logistic方程的兩個重要的參數r （ t ） ， k （ t ）分別是漸近周期函數時，研究漸近周期logistic方程的漸近周期解，並且得到了解的存在性，唯一性，全局吸引性等一些良好的性質
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