genetic population structure 中文意思是什麼

genetic population structure 解釋
遺傳群體結構
  • genetic : adj. 1. 遺傳（學）上的。2. 發生的，發展的；創始的。adv. -ically
  • population : n. 1. 人口；人口總數；全體居民；人口的聚居。2. 物的全體[總數]；【生物學】蟲口；種群（量）；群體；族，組，個數；【統計學】對象總體，全域。3. 【物理學】布居；密度。4. 〈罕用語〉殖民。
  • structure : n. 1. 構造，結構；組織；石理，石紋。2. 建造物。3. 【化學】化學結構。4. 【心理學】（直接經驗中顯現的）結構性，整體性；整體結構。adj. -d ,-less adj.
  1. 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。
  2. 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 。
  3. Population genetic structure and differentiation of anthoxanthum a lpinum in the subalpine - alpine ecocline of swiss alps

    亞高山過渡區高山黃花茅的群體遺傳結構和分化研究
  4. Second, the population genetic structure and genetic diversity of e. mollis were studied by using allozyme eletrophoresis and the electrophoretic data for 6 loci from 3 populations being xiangning, yicheng and pinglu populations in shanxi were got. the level of polymorphism was relatively higher than that of the insect - pollinated outcrossing species ( he = 0. 375 )

    用等位酶電泳法和biosys - 2軟體對山西翅果油樹種群的遺傳結構和遺傳多樣性進行了研究，通過對3個種群的6個等位酶位點的電泳分析，結果表明： 5個位點為多態位點， 1個單態位點。
  5. 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。
  6. 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。
  7. Of the species, . characters of ecology, reproductive biology, genetic diversity, population genetic structure, endangering mechanisms, and sampling strategy have been studied in view of conservation biology. the results may be summarized as follows : by field investigation, we found that the localities recorded for four specimens of d. versipellis and d. pleiantha had disappeared, and most of the present populations are located in protected subforests. the distributional range of d. versipellis has also been reduced greatly, evidently, the number of present populations has decreased, the resources are reduced sharply, and the species are clearly endangered

    從保育生物學的角度，對八角蓮種群生態學和生物學特性、遺傳多樣性水平和遺傳結構、瀕危機制及保育取樣策略進行了研究，結果如下：通過野外調查發現，原標本記載的一些八角蓮和六角蓮種群已難以找到，該類群目前多分佈於自然保護區外圍次生林地帶，分佈范圍明顯縮小，現存群體的規模也明顯減少，資源量貧乏，物種處于瀕危狀況。
  8. 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
  9. The quot; kriging quot; model of spatial genetic structure in human population genetics

    海馬驚厥閾下電刺激對大鼠情感行為及空間學習記憶的影響
  10. Population genetic structure was studied using rapd analysis to reveal the relationship between the genetic variations and heterosis

    同時採用rapd技術對f1代不同群體的遺傳結構進行比較，研究群體內的遺傳變異與雜種優勢的關系。
  11. As a whole, the result of population genetic structure detected by rapd and issr was consistent, yet there was a little difference between intra - population genetic diversity. this was mainly because of the ability of detecting genetic variance of the two techniques

    5 ? rapd和issr對于群體遺傳結構的分析結果是一致的，但是在群體內的遺傳二」多樣性上略有差異，這主要是因為兩種技術的對遺傳變異的檢測能力不同，同時在進行群體遺傳分析時issr的取樣量偏少也是影響這個結果的一個主要原因。
  12. Additionally, through the use of clustering analysis, principal factor analysis and the correlation analysis, we found that the genetic structure of natural population reawnuria soongorica was related to the ecological factors ( soil factors mainly ) of the oasis - desert transitional zone

    而其它土壤生態因子則與紅砂的遺傳多樣性指數的相關性均不顯著（ p 0 . 05 ） 。表明紅砂個體的分佈可能與過渡帶土壤的某些易溶性鹽分相關。
  13. Age - structure dynamics and genetic consequences of hippophea rhamnoides l. subsp sinensis clone population in mu su sandland

    毛烏素沙地中國沙棘無性系種群年齡結構動態與遺傳後果研究
  14. However, d. versipellis also processes vegetative reproduction by rhizome and root. based on optimization of reaction conditions and systems, rapd - pcr was performed to detect the genetic diversity and popolation - genetic structure of the five d. versipellis populations and are d. pleiantha population

    在反應體系和反應條件優化的基礎上，利用rapd標記對八角蓮5個種群和六角蓮1個種群進行了遺傳多樣性、種群遺傳結構評價和取樣策略研究。
  15. Finally, genetic optimization research is summarized on several typical production scheduling problems. after expounding the general idea of genetic algorithm, the comparative advantages in contrast to the traditional algorithm, the basic characteristics of genetic algorithm and its theoretical base, the paper puts emphasis on the efficiency of genetic algorithm in the scheduling of flow shop, and puts forward an improving genetic algorithm : the ordinal genetic algorithm based on the heuristic rules. the new algorithm introduces into the initial group the solution of heuristic algorithm, and in the group structure adopts a strategy of first ordering according to the priority of the adaptive solution, and then defining a new way of choosing probability by segments, which provides more hybridizing opportunity for optimized individuals, and designs variation - control rule to prevent single population and partial optimal solution

    在論述了遺傳演算法的思想、與傳統搜索演算法的比較優勢、遺傳演算法的基本特徵和遺傳演算法的理論基礎（包括模式定理、隱含并行性、基因塊假設、欺騙問題和收斂性定理）后，重點探討了遺傳演算法在flowshop調度問題中的潛力和有效性；結合啟發式規則，提出了一個改進的遺傳演算法?基於啟發式規則的有序遺傳演算法，新演算法在初始種群中引入了啟發式演算法的解，在種群結構上採用了先按適應值優劣排序再分段確定選擇概率的新策略，使優質個體有更多的雜交機會，在變異中設計了變異控制規則，以防種群單一化，而陷入局部優化解。
分享友人
分享到 Line

分享到臉書