gene flow 中文意思是什麼

gene flow 解釋
基因交流
  • gene : n. 【生物學】基因。 dominant gene顯性基因。
  • flow : vi 1 流，流動。2 （血液等）流通，循環。3 流過；川流不息；（時間）飛逝；（言語等）流暢。4 （衣服、...
  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. ( 2 ) gene flow frequency was reduced as distance from pollen donor increased and a dramatic reduction occurred at about 2 meters. the maximum distance where gene flow was not detected was 50 m for hybrid rice while it was 70 m for ms lines, with an exception that in one of the four ms lines it was detected a frequency of gene flow 2. 8 + 10 - 6 at 150 m for zhong 9a

    在開花期主流風向ne的風速為0 . 2 ? 2 . 2m / sec的條件下， 2個雜交稻品種的最大漂流距離為40m ； 4個不育系的基因漂流基本上到60m為止， 70m處基因漂流頻率均降為0 ，僅中9a在150m處發現了1株basta抗性苗，經pcr檢測驗證為陽性。
  3. Gene flow the movement of alleles within and between populations of the same species through interbreeding

    基因流動：同一種群內由於雜交或種內選擇使某一等位基因在該種群內擴散。
  4. Pollination phenology and an indirect estimate of gene flow in natural populations of psathyrostachys huashanica

    華山新麥草開花物候期觀測和自然種群基因流的間接估測
  5. Power investigates gene flow in cultivated grain crops ? wheat, barley and oats ? engineered to contain genes that make the plants resistant to the barley yellow dwarf virus ( which damages some 100 grass species )

    包爾正在調查小麥、大麥和燕麥等谷類作物的基因流通，它們都植入了抵抗大麥黃矮病毒的基因，此種病毒會侵犯約100種草類植物。
  6. Power investigates gene flow in cultivated grain crops wheat barley and oats engineered to contain genes that make the plants resistant to the barley yellow dwarf virus which damages some 100 grass species these gm grain crops could be on the market within the next decade

    包爾正在調查小麥大麥和燕麥等谷類作物的基因流通，它們都植入了抵抗「大麥黃矮病毒」的基因，此種病毒會侵犯約100種草類植物。
  7. Bhattacharyya np, basu p, das m, et al negligible male gene flow across ethnic boundaries in india, revealed by analysis of y - chromosomal dna polymorphisms [ j ]. genome res. 1999 aug ; 9 ( 8 ) : 711 - 9

    李冬娜、應大君、區采瑩，等.中國海南島黎族人群y染色體上四個微衛星基因座的多態性研究.中華醫學遺傳學雜志[ j ] . 2003 ; 1 : 1 - 3
  8. 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。
  9. Environmental impact testing of genetically modified maize. part 2 : testing the ecological risk of gene flow

    轉基因玉米環境安全檢測技術規范.第2部分:外源基因流散的生態風險檢測
  10. Environmental impact testing of genetically modified soybean. part 2 : testing the ecological risk of gene flow

    轉基因大豆環境安全檢測技術規范.第2部分:外源基因流散的生態風險檢測
  11. Environmental impact testing of genetically modified oil seed rape part 2 : testing the ecological risk of gene flow

    轉基因油菜環境安全檢測技術規范.第2部分:外源基因流散的生態風險檢測
  12. Probing into the method of prompt test of herbicide sethoxydim - resistant gene flow

    快速檢測抗除草劑拿捕凈基因流的方法初探
  13. 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。
  14. Isolating mechanism structural, physiological, behavioral, genetic, geographical, or other factors that restrict the interbreeding of one population with another, hence restricting gene flow

    隔離機制：由於結構、生理、行為、遺傳、地理或其它因素限制了一個種群與另一種群雜交的機制，從而限制了基因的流動。
  15. In many cases says cornell ecologist allison power we know gene flow will occur

    康乃爾大學的生態學者包爾說： 「很多案例顯示，基因流通終將發生。
  16. The gene flow among the subpopulations of reawnuria soongorica ( mn = 1. 1028, nm > 1 ) was much less than that of the common anemophytes ( atm = 5. 24 ), so the species was in the critical state of genetic differentiation to some extent the results of amova showed that there were 61. 58 % of the total genetic variations existing among the subpopulations, and 38. 02 % within them

    紅砂亞種群間的基因流nm = 1 . 1028 ， nm 1但低於一般風媒傳粉植物（ nm = 5 . 24 ）的基因流水平，處于分化的臨界狀態。 amova分析說明紅砂種群變異的61 . 58存在於亞種群內，而亞種群間的變異占總變異的38 . 02 。
  17. ( 3 ) under side by side plantation, the frequency of gene flow from cultivated rice to common wild rice was found to be 2. 162 % - 7. 598 %, indicating there exists a relatively high degree of genetic change between them under natural conditions

    在自然條件下，兩種普通野生稻與轉基因水稻l201相鄰種植（ 0m區） ，在o rufipogon上檢測到的基因漂流頻率達7 . 598 % ，在o nivara上檢測到的基因漂流頻率為2 . 162 % ，說明栽培稻與普通野生稻之間有相當高的基因漂流。
  18. Based on data generated, we classify 8 recipients into three categories in terms of possible environmental impact : ( 1 ) low risk of gene flow to common cultivars ; ( 2 ) intermediate risk to common wild rice with same aa genome ; ( 3 ) high risk to ms lines. 2. development of a specific database for toxin and anti - nutrient proteins bioinformatics is a very useful tool for risk assessment of gm foods

    從轉基因水稻的環境風險考慮，轉基因向常規稻的基因漂流頻率及最大距離都較小，相應地其風險也較低；向不育系的基因漂流頻率較高，最大漂流距離也較大，相應地其風險也較高，應重點考慮轉基因漂流對雜交稻制種純度的影響及其可能引起的環境風險後果；轉基因向普通野生稻的基因漂流頻率中等。
  19. The genetic differentiation of among populations might be caused by human selective pressures and barriers to gene flow

    群體間一定程度的遺傳分化可能是人為選擇壓力和基因流障礙引起的。
  20. 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。
分享友人
分享到 Line

分享到臉書