diversity gene 中文意思是什麼

diversity gene 解釋
d基因,高變基因
  • diversity : n. 1. 不同，異樣，差異。2. 繁多，多種，多樣，駁雜，參差。
  • gene : n. 【生物學】基因。 dominant gene顯性基因。
  1. Cryptic species have been found in a wide range of marine organisms ; with majority of them are benthic invertebrates. in contrast, marine holoplanktons are thought to have lower diversity and slow speciation due to their strong dispersal potential. this paper reviewed studies on cryptic species and speciation in marine holoplankton. based on findings in 38 studied taxa, it was concluded that : 1 ) cryptic species are pervasive in marine holoplankton, suggesting holoplankton speciation was more active than previously thought ; 2 ) current morphospecies diversity is untenable to reflect true species diversity in marine holoplankton ; 3 ) geographic isolation may facilitate cryptic speciation of marine holoplankton. however, contribution of allopatric speciation is still questionable ; 4 ) ecological speciation may be the prevailing speciation mode in marine holoplankton. cryptic speciation in marine holoplankton is paradoxical, because rapid speciation under strong gene flow is countertuitive. solution of this paradox will help us gain deep insights of marine speciation and biodivesity

    隱種廣泛存在於各類海洋生物中，尤其是底棲無脊椎動物.然而，海洋終生浮游生物由於具有較強的擴散能力，往往被視為生物多樣性低、物種形成慢.本文就海洋終生浮游生物隱種與物種形成的研究作一綜述.基於研究的38個種類，結果表明: 1 ）海洋終生浮游生物普遍存在隱種，其物種形成要比想象得快; 2 ）由於引種的廣泛存在，形態種生物多樣性無法反映海洋終生浮游生物真正的物種多樣性; 3 ）地理隔離有助於海洋終生浮游生物隱種的形成，但異域物種形成的作用仍值得商榷; 4 ）生態物種形成很可能是海洋終生浮游生物物種形成的主流模式.海洋終生浮游生物強基因流下快速的物種形成有悖于生物進化常理，解決該悖論將有助於我們對海洋物種形成和生物多樣性的理解
  2. The results showed that the mean proportion of polymorphic loci ( ppb ) of anabasis aphylla, which comprised 3 subpopulations ( 58 individuals sampled ), generated by 16 primers was 94. 56 %, the value of ppb of ceratocarpus arenarius, which had 4 subpopulations ( 80 individuals sampled ), using 16 primers was 98. 00 %. the paper had proved that the higher genetic diversity and the genetic differentiation existed in the populations of boih anabasis aphylla and ceratocarpus arenarius, while the latter had much more genetic diversity than the former. moreover, the study discussed the shannon information index and nei ' s gene diversity index of the two species natural populations, which indicated that there were more genetic variations within the subpopu

    另外，通過rapd資料的聚類分析及相關性分析研究，發現無葉假木賊和角果藜自然種群的遺傳結構與綠洲沙漠過渡帶的微生境生態因子（主要是土壤因子）相關，其中無葉假木賊亞種群遺傳多樣性水平不僅與土壤含水量（ w ） 、鉀鈉離子濃度（ k + na ）和氯離子濃度（ cl ）呈顯著的正相關（ p 0 . 05 ） ，還與土壤中有機質（ som ） 、全氮（ nt ）和全磷（ pt ）含量呈顯著的負相關；同時，角果藜種群的遺傳多樣性水平與土壤中有機質（ som ）和全氮（ nt ）含量呈顯著的正相關，而與co _ 3 ~ （ 2 - ）濃度呈顯著的負相關；除此之外，其它土壤生態因子與兩物種遺傳多樣性水平的相關性均不顯著（卜0 . 05 ） 。
  3. The origin and evolution of land plants was an important event in the history of earth life and has affected all other lives on the earth and global environment. during the past two decade, the new discoveries of fossil plants microfossils and megafossils from the mid - ordovician through all silurian to the lower devonian improved knowledge of the origin of land plants, provided a time framework of the basal groups for the land plants and the early evolution diversity of vascular plants. three new plant based epochs have been recognized. on the other hand, molecular sequence studies have provided insights into the phylogeny and early branches of land plants. a phylogenetic tree has been established by the joint of a study of comparative morphology and gene sequences. this paper summarizes recent advances and new knowledges, comments on the phylogenetic studies based on the cladistic analysis

    陸生植物的起源和演化是地球生命中的重大事件，它影響到地球上所有的其他生命和全球環境。在過去的20年中，從中奧陶世歷經整個志留紀至早泥盆世的巖層中，化石植物微化石和大化石的新發現改變了人們對陸生植物起源的認識，並且為陸生植物和維管植物早期演化分異提供了基部類群分化的時間框架。據此人們識別出地史中的3個陸生植物的時代：始胚植物時代始維管植物時代和真維管植物時代。
  4. Two captive populations could n ' t be defined as separate evolutionary significant units ( esus ) because of lacking of genetic divergence between them, and should be considered as a single esu in the conservation of the species. by comparing the sequences of control region of mitochondrial dna from three species of crocodiles, it is revealed that the smallest genetic diversity exists between alligator sinensis and alligator mississipiensis. a portion of mitochondrial nd4 and cytochrome b gene of 3 species of crocodilian was sequenced

    百年來關于揚子鱷的分類地位存在著很多爭議，本文利用測得的揚子鱷（ alligatorsinensis ） 、暹羅鱷（ crocodlylussiamensis ）和灣鱷（ crocodylusporosus ）的mtdnand4和cytb基因序列，以及從genbank中獲得密西西比鱷、凱門鱷和海龜（ cheloniamydas ）的nd4基因和cytb基因相應片段，構建以海龜為外群的系統進化樹。
  5. Organizers say the effort will secure more than 95 % of the endangered crop diversity represented in gene banks in developing countries

    組織者說，將努力爭取在發展中國家的基因銀行里保存95 %以上瀕危的多樣性作物。
  6. As analyzed, ( 1 ) the rapd technique is highly sensitive to investigating genetic diversity in t. lepturus and e. muticus. t. lepturus exhibits lower polymorphism and genetic diversity than e. muticus ; ( 2 ) according to the analysis of the partial mitochondrial 16s rrna gene sequences, a very low intraspecific variation and considerably high divergence among species were found, which reveals a dual nature of conservatism and variability in mitochondrial 16s rrna gene ; ( 3 ) five primers generate the species - speeific rapd sites and these sites can be served as the molecular markers for species identification and ( 4 ) it can be proved at dna variation level that t. lepturus and e. muticus are of two species respectively pertainiag to different genera, which supported the nelson taxonomic conclusion

    分析結果表明: （ 1 ） rapd技術研究黃海帶魚和小帶魚的遺傳多樣性具有較高的靈敏度和檢出率，帶魚的多態比例和遺傳多態度均較小帶魚的低; （ 2 ）線粒體165出兇a基因序列在分析兩物種遺傳變異時表現出保守和變異的雙重特性，種內變異極小而種間較大: （ 3 ） 5個隨機引物擴增出種特異的ra衛d帶，可作為種間分子鑒定標記; （ 4 ）研究證實帶魚和小帶魚是不同屬的兩個種，從而在分子水平上支持了nelson分類系統的觀點。
  7. Diversity in gene expression regulation of endoplasmic reticulum stress response

    內質網應激反應基因表達調控的多樣性
  8. So must use information theory method depict and abundant the genetic diversity index system. in addition to, the introduce of molecule biology technology and the research of nucleotide sequence evolutive give a new method for population genetic, so must do deeply research about the analysis method of dna sequence data = the research main about the follows : there are three parts about the information model of population genetic : one about the shannon information entropy property of equilibrium population and the entropy change in the process of establish equilibrium ; another research is about the diversity measure - ment of genetic variation ; lastly, research the shannon information measurement about the disequilibrium gene variation. the result is : 1 to a definite gene distribution, the genotype entropy reach the maximum at the equilibrium population, the process of population from disequilibrium to equilibrium, the entropy get large and large

    此外，分子生物技術的介入及核苷酸序列進化的研究都為群體遺傳學的深入研究提供了新的途徑，但關于dna序列數據的分析方法需要作進一步的研究。本研究主要體現在以下幾個方面： （一）關于群體遺傳學的信息論模型研究，主要分為三部分內容：一是群體平衡的shannon信息熵的性質和群體平衡建立的熵變性質；二是群體遺傳多樣性測度的研究；三是非平衡群體的基因變異測量shannon信息量的方法研究。得到了如下結論： 1 、平衡群體的shannon信息熵最大，群體平衡的過程是熵的增大過程。
  9. The data was analyzed with three softwares : tfpga popgene32 and amova155 which are tools for molecular analysis. the percentage of polymorphic sites at species level was 86. 93 %, and they were 83 % 68 % and 80 % at population level. nei " s gene diversity index was 0

    但長葉榧還保留了較高的遺傳多樣性：物種水平的nei氏基因多樣度指數達到0 . 2479 ， shannon信息指數也達到了0 . 3807 ，而其物種水平的多態位點百分率高達86 . 93 。
  10. Several results were concluded : firstly, the population of t. jackii was decreasing sharply and its living area was contracting, so the percentage of genetic variance among t. jackii populations was lower than that within its population ; secondly, its genetic diversity index was relatively high ; thirdly, according to its gene flow index, the population disintegration of the species could be prevented by genetic communication among populations of the species ; finally, the similar index between the populations from jiangshi nature reserve and from xufan reservoir was higher than that between the populations from jiangshi nature reserve and from xufanggeng, corresponding with the fact that it is nearer between jiangshi nature reserve and xufan reservoir than that between jiangshi nature reserve and xufanggeng

    2 、長葉榧的遺傳多樣性分析，分析了多態位點百分率（ percentageofpolymorphicsites ） 、 nei氏基因多樣性指數（ nei 』 sgenediversityindex ） 、 shannon信息指數（ shannon 』 sinformationindex ） 、居群間的相似系數（ geneticsimilarityindex ）和遺傳距離（ geneticdistance ） 、遺傳變異在居群間和居群內的分佈（ thepercentageofvarianceamongandwithinpopulation ）及基因流（ geneflow ） 。結論是：分佈在群體間的遺傳變異較分佈在群體內的遺傳變異小，說明該生物的分佈范圍越來越狹小。
  11. 2479 at species level, and they were 0. 2182, 0. 1684 and 0. 1881 at population level. the result of shannon " s information index analysis was correspondent with the result of nei " s gene diversity index analysis

    其基因流的期望值達1 . 6899 ，從理論上講，若nm 1 ，群體間的基因交流可以防止遺傳漂變造成的群體分化。
  12. In addition, base on the certain level of genetic differentiation of among the 4 possible natural populations, it is advised that adult plants or seedlings of ginkgo be transplanted mutually in order to enhance the gene flow among them and preserve the genetic diversity of ginkgo furthest

    因銀杏群體間已出現了一定程度的遺傳分化，建議在可能的自然群體間進行植株和種子幼苗相互移栽，以增強群體間的基因流，最大限度地保護銀杏的遺傳多樣性。
  13. The study of different deteriorated grasslands showed, although occurring genetic differentiation and reduced genetic diversity, biodiversity in deteriorated population can still maintain a high level. additionally, it had gene exchanges with normal populations. the deteriorated grassland can restore its vegetation as normal if rational management was adopted

    不同退化系列，克氏針茅種群雖發生了遺傳分化，遺傳多樣性略有降低但仍維持較高的水平，且與正常草地間有基因流，只要採取合理的草地利用措施，減輕放牧壓力，退化草地即可恢復，若採取人工補播正常種群種子，將會加快退化種群的恢復進程。
  14. Research field were transgenic breeding, marker assisted breeding, molecular design breeding, related plant functional gene, genetic diversity, molecular maker genetic, basic theory and experiment technology of genetic breeding

    研究領域主要涉及轉基因育種、分子標記輔助育種、分子設計育種以及相關的植物功能基因、遺傳多樣性、分子標記遺傳及遺傳育種基礎理論和實驗技術等。
  15. It is necessary for a species " adaptation and evolutionary potential to keep genetic variety at a relative level. genetic diversity in the population must not be lost furthermore and gene exchange among individuals should be enhanced as much as possible to avoid extinction of crested ibis

    一定程度的遺傳變異性是維持種群的適應力與進化潛力的必要條件，為使朱?免於滅絕的厄運，必須避免其種群遺傳多樣性的進一步喪失，並盡可能增加個體間的基因交流，最大限度地避免近親繁殖。
  16. Primers of ecori were signed with fluorescent dye and four pairs of primers were selected from twenty - four pairs. 261 dna fragments were generated by the four pairs of primers in forty - three individuals sampled. percentage of polymorphic bands is 51 %, the value of shannon index ( i ) is 0. 086 and nei ' s gene diversity ( h ) is 0. 151

    統計這些aflp表型帶標記，用popgene軟體計算各種多樣性數據（ ppb值為51 ， shannon多樣性指數為0 . 086 ， nei ' s基因多樣性值為0 . 151 ） ：用ntsys軟體計算各個樣品間的相似性系數，並用upgma法基於相似性系數進行聚類分析，構建樹狀圖，它們可反映出元寶山冷杉種群內個體間的遺傳關系。
  17. Based on these results, the strategies for conservation e. mollis population to prevent the isolation and fragment of the populations and maintain the high genetic variation among the populations. moreover, it should be avoid the decline of gene flow was resulted from the isolation of the populations so that resulted in the differentiation and genetic decline of the population. finally, it should be adopt some method to spread continuous distribution and extend genetic diversity of the population

    針對翅果油樹的遺傳結構和遺傳多樣性的研究結果，提出了保護翅果油樹種群的策略：維持現有翅果油樹種群高的種內遺傳變異水平，遏制由於人為原因而導致的翅果油樹種群隔離或片段化的趨勢，防止由於種群隔離造成基因流降低，從而引起種群分化和種群的遺傳衰退，並採取適當措施擴大種群的連續性和種群內的遺傳多樣性水平。
  18. Results the two colonies had high level of genetic diversity and low degree of genetic similarity - compared with the original colony, the biological purifying colony had 17. 86 % gene lost, but the two colonied did not show apparent genetic differentiation ( f ( subscript st ) < 0. 05 )

    結果2個長爪沙鼠群體均具有豐富的遺傳多樣性；生物凈化群體與初始群體比較有17 . 86 %的基因丟失率，但尚未出現明顯的遺傳分化現象（ f （下標st ） < 0 . 05 ） 。
  19. In the sediment, bacteria belonging to the cfb ( cytophaga - flexibacter - bacterioides ) group and the - proteobacteria, - proteobacteria were the main groups. the 16s rdna diversity of 7th layer was different from that of other layers, including the analysis of rflp, gene type and the population of cfb group. and the population of - proteobacteria showed inverse ratio with that of cfb group

    基於以上的試驗，我們分析了企鵝糞便沉積物中微生物生態與環境變化和環境污染的關系並提出了沉積物中出現的異常在環境和氣候方面可能的解釋，初步建立了以分析企鵝糞便沉積物中微生物多樣性為手段的新的考察南極氣候變遷和環境污染的思路。
  20. Results there are wide applications for medicinal plant researches, such as identification, genetic relationship, origin and evolution, genetic diversity, gene mapping, gene cloning and genetic engineering of metabolic pathway

    結果分子標記在藥用植物的鑒定、親緣關系、起源進化、遺傳多樣性、基因定位及克隆、代謝途徑的基因工程研究等方面有廣泛的應用空間。
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