genetic variation 中文意思是什麼
genetic variation
解釋
遺傳變量-
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。 -
The posture characteristics and systematic measurement of burbot was compared be tween jingbo lake and baikal. the genetic variation of the posture characteristics of the jingbo lake burbot was discussed from
通過對位處黑江水系南緣位置的鏡泊湖所產江鱈體態性狀的系統測量統計數值，與屬北極海水系的貝加爾湖江鱈的同等性狀進行對比，用統計學 -
The discontinuous component of the genetic variation pattern of a species also contains the differences among subpopulations resulting from accidents of sampling genetic drift and others.
物種遺傳變異型不連續的成分也包含抽樣遺傳播遷和其他事故引起的亞種群之間的差別。 -
It is a nice irony, given the traditional association of the naturist position with eugenic arguments, that if variation in intelligence really is caused by underlying genetic variation, then the dull are as evolutionarily fit as the clever
這是一個很巧妙的諷刺，這樣自然主義者的傳統學會就多了一些關于優生的爭論? ?如果智商的波動真的是由潛在基因變體造成的話，那麼從進化論的角度來講，癡呆兒的身體狀況就會與高智商兒的狀況一樣好。 -
The role of introgression in shaping the genetic variation pattern of the species should be seen in the same light.
在形成種的遺傳變異型中，種質滲入所引起的作用也應當用同樣的見地來看待。 -
Among avian orders, the anseriformes ( screamers and waterfowls ) are a morphologically and biologically diverse group containing ca. 150 species distributed worldwide except antarctica. this paper will review the phylogeny of anseriformes firstly and then discuss the molecular phylogeny of anseriformes based on the genetic variation of mitochondrial 12s rrna gene and cytochrome b gene respectively
本文首先對雁形目鳥類的系統發生研究進行了綜述，然後分別基於雁形目鳥類線粒體dna12srrna基因和細胞色素b基因全序列的遺傳變異分析，探討了雁形目鳥類分子系統發生。 -
Of all the 90 individuals, most individuals from a population can clustered together in the dendrogram of genetic relationship. it showed that among these populations there is great genetic variation. in particular, the genotype of tx population has been specified
6個銀杏群體共90個樣品的單株upgma聚類分析亦顯示來自同一群體的個體大體上都能各自聚在一起，表明各銀杏群體已有相當程度的遺傳分化。 -
New genetic changes has appeared in the selected shrimp generation, at the same time, no generation - specific bands were found. in addition, genetic variation among g2, g3 w1, hg were estimated by aflp and sampl, as shown in the umpga dendrogram, g2, g3, g4 were clustered into one group, and then g3, g4 were clustered. whether the data from aflp and sampl were calculated together or respectively, the results were similar with only a little difference from aflp
另外，應用aflp和sampl對g2 、 g3 、 g4 、 w1及一個日照養殖群體hg進行了比較，將aflp 、 sampl條帶統計到一起聚類分析顯示g2 、 g3 、 g4聚為一支與w1與hg的聚合支首先分開， g3 、 g4再聚為一支與g1分開，顯然g2 、 g3 、 g4聚合趨勢與上述sampl分析結果相似；除aflp 、 sampl條帶統計到一起計算外，對上述g2 、 g3 、 g4 、 w1 、 hg相同樣本的aflp 、 sampl條帶分別進行了運算，可以看出兩種方法結果相似，單一技術計算結果與兩者聯合處理結果相似，但aflp條帶經popgene軟體處理所得umpga系統樹卻有所差別。 -
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。 -
Twenty f1 combinations crossed among 5 varieties and strains different in fiber properties according to complete diallel crossing design were used to evaluate the heterosis and gene action of boll weight and lint percentage in high quality fiber property varieties in upland cotton in 1998 1999 for two year successively at nanjing. it was indicated that there existed small interactions with the environmental factors without maternal effects and the additive gene effect was in chief, attaining to 51. 2 % and 65. 4 % respectively for boll weight and lint percentage. the dominant effect was also in higher rate, 32. 6 % and 16. 8 % respectively. the population mean heterosis of boll weight and lint percentage over the mid - parental mean were relatively prominent 13. 3 % and 3. 5 % respectively in extreme significance. however, boll weight showed no significantly surpassing parental f1 heterosis over the better parent based on population mean ( 2. 0 % ) ; while the lint percentage expressed significant negative heterosis value ( - 2. 1 % ). the gene actions were in conformity with the heterosis expression. it was shown clearly that the f1 combinations crossed between parents with similar performances had relatively high dominant effects and significant positive f1 surpassing parental heterosis ( f1 heterosis over the better parent ) ; while no f1 combination crossed between the parents with prominent mutual difference surpassed the higher parent in yield components, which indicated that among those parents with less difference and close relationships, there still existed sufficient genetic variation or certain mechanism for creating variation and achieving greater advances in breeding. correlation analyses also indicated that there still existed severely undesirable negative correlation between yield and fiber properties as well as the difficulties for their simultaneous improvements
利用5個具有不同纖維品質性狀的品種（系）配製完全雙列雜交組合20個，通過親本和f1的2年隨機區組試驗發現產量性狀的鈴重和衣分與環境的互作效應小，不存在母體效應，並以加性遺傳效應為主，分別占表型方差的51 . 2 %和65 . 4 % ;顯性遺傳效應所佔的比率也較高，分別為32 . 6 %和16 . 8 % .鈴重和衣分的群體平均優勢較大，分別為13 . 3 %和3 . 5 % ，達到了極顯著;鈴重的超親優勢為2 . 0 % ，不顯著;衣分為顯著的負值（ - 2 . 1 % ） .遺傳分析與雜種優勢結果一致.具體表現在產量性狀上，親本相當配製的組合雜合顯性較高，其超親優勢正向顯著，而極值親本（差異較大）所配組合沒有超過高親的.這表明親本差異小、親源關系較近的親本中仍然存在足夠的遺傳變異或某種機制以創造變異使育種取得更大的進展.相關分析表明了仍然存在嚴重的品質與產量的負相關，遺傳改良的難度較大 -
Genetic variation of chemical constituent in ginkgo biloba leaves
銀杏葉中化學成分的遺傳變異 -
Genetic variation in 5 ' - upstream region and the second intron of h - fabp gene in nine pig breeds
上游區和第二內含子的遺傳變異 -
Inherited genetic variation has a critical but as yet largely uncharacterized role in human disease. here we report a public database of common variation in the human genome : more than one million single nucleotide polymorphisms snps for which accurate and complete genotypes have been obtained in 269 dna samples from four populations, including ten 500 - kilobase regions in which essentially all information about common dna variation has been extracted
我們現在發表一個人類基因組常見遺傳變異的公開資料庫：這是一個對來自四個群體269個樣品內的一百萬個單核苷酸多態性（ snps ）進行了完整並準確的分析的研究成果；另外也確認了十個dna片段（每個片段含有五十萬個堿基）的所有常見遺傳變異資訊。 -
Abstract : quantitative genetic variation in larval tolerance to cyhalothrin and fenvalerate was examined in a pyrethroid - resistant population of cotton bollworm, helicoverpa armigera ( h & uuml ; bner ) was examined with half - sibling analysis and significant additive genetic variation in larval tolerance was detected, demonstrating that tolerance phenotypes in this population are highly heritable ( h2n narrow sense heritability = 0. 4625 0. 1578 ) to fenvalerate than that to cyhalothrin ( h2n = 0. 2476 0. 0248 )
文摘:通過單對交配設計不同的交配家系，採用半同胞法分析了棉鈴蟲對三氟氯氰菊酯和氰戊菊酯的抗性狹義遺傳力，並對2種菊酯類藥劑的抗性發展速度進行評價。 -
To our knowledge, the effect of genetic variation in leaf angle and dispersion has not been adequately quantified in trees.
據我們所知，在葉片角度和分佈上遺傳變異的效應，在樹木中還沒有被適當地定量研究過。 -
Genetic variation of a - fabp microsatellites in eleven pig breeds
基因微衛星遺傳變異的研究 -
A genetic variation, like for evolution
一種遺傳變異就像進化 -
Biochemical genetic variation in chinese oyster ostea rivularis
近江牡蠣3個種群生化遺傳變異的研究 -
Besides the immunological functions, mhc genes also play important roles in many other respects. the polymorphism of mhc genes, especially of mhc class ii genes, is the most essential property. moreover, mhc genes are usually used to analyze the genetic structure and genetic variation in conservation genetics
Mhc除了具有免疫功能外，還在其它許多方面起作用： mhc基因的多態性是最受關注的特徵，尤其是類基因，因此可將mhc位點作為一種遺傳標記，用於種群遺傳結構和變異性的研究，這對於一些瀕危物種的遺傳保護起到重要的作用。 -
Analysis on population genetic variation and its correlation to heterosis of body weight using microsatellite dna markers in yellow plumage broilers
黃羽肉雞群體遺傳變異的微衛星分析及其與體重雜種優勢的關系
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