查询词典 phylogenetic

The nucleotide sequence from the coding region of the F gene between nucleotides 1 and 374 was compared by phylogenetic analysis. Total 76 NDV strains from ND outbreaks in China between 1979 and 2005 were analyzed.

表明我国目前NDV 基因型以Ⅶ型为主，还有I、Ⅱ、Ⅵ、Ⅷ和Ⅸ存在， 2004 年黑龙江省的NDV 主要流行毒株为VIIe 型，鸽源NDV 为基因VI 型，与近年来全国NDV 的流行趋势相似。

The fragment of F gene covering cleavage site region was amplified by RT-PCR, cloned and compared. Basing on published sequences of representative NDV strains, a phylogenetic tree was constructed to analyse their variation relation.

第二部分：NDV Sddy-02株F基因的克隆与序列分析本试验设计了一对特异性引物，应用RT-PCR技术扩增出NDV Sddy-02株F基因含裂解位点区363bp片段，同时进行克隆和序列测定分析。

Based on the above research, The situation and level of insecticides resistance in the German cockroach, relationship between activity of P450s and resistance, cloning and identification cytochrome P450 CYP4 genes, phylogenetic relations of insect P450 and the role of CYP4 genes in insecticides resistance of the German cockroach were clarified. The methods to analysising early diagnostics of resistant colony was established.

通过上述研究工作，基本上阐明了德国小蠊的抗药性水平、抗药性的产生和发展、抗性群体的早期诊断、多功能氧化酶系的环氧化活力与抗药性的关系、德国小蠊CYP4基因的克隆和核心序列分析、昆虫P450基因的同源性及进化、CYP4基因在德国小蠊抗药性中的作用等几个方面的内容，并建立了抗药性的早期诊断技术。

Phylogenetic trees for the CXCR4 gene sequences constructed by using maximum parsimony, maximum likelihood and distance method are similar except branch pattern within the New World Monkey lineage.

通过对基于最简约法、最大似然法、距离法构建的CXCR4基因树的比较分析表明，利用Gamma距离法重建灵长类CXCR4基因树的准确性可能更高。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。