系统发生

The application to phylogenesis of gene rearrangement of mtDNA in Anura groups was analyzed. It showed that the higher Anura was, the more complicated gene rearrangement became.

本文分析了蛙类mtDNA基因重排多样性，并探讨了蛙类mtDNA基因重排在系统发生关系上的应用，发现越高等的物种，其线粒体基因重排越复杂。

Has the orb-web a monophyletic or a polyphyletic origin? In other words, is Orbiculariae (Deinopoidea + Araneoidea) monophyletic or polyphyletic? There is a considerable dispute about phylogenetic relationship between Deinopoidea and Araneoidea.

但关于妖面蛛总科和园蛛总科间系统发生关系，即圆网蛛类是否为单系起源，换言之，圆网究竟是经历一次进化还是多次进化，多年来始终是悬而未决的蛛形学难题之一。

The model of arcing was selected to sumulink the fault arcing produced in building power distribution system.

选择合适的电弧模型，对建筑配电系统发生的故障电弧进行了仿真。

The study also found that the CesA genes of Bambusa oldhamii shared the high identity and close phylogenetic relationships with that of maize and barley.

研究还发现绿竹CesA基因与玉米和大麦CesA基因在系统发生关系和同源性方面关系密切。

So cast measurement is used to complete the cephalogram. But cast measurement studies are referenced to the changing occlusion plane.

而模型研究只能以同样处于变化中的〓平面作为参照，很难与相对不变的颅骨参照系统发生联系。

Yangtsekiense populations. 1. The mitochondrial genome S. yangtsekiense and phylogentic studies of Decapoda We determined the complete 11, 405 bp mitochondrial DNA sequence of S.

长江华溪蟹线粒体基因组及十足目系统发生研究测定了长江华溪蟹线粒体基因组11， 405 bp的核苷酸序列，包括11条蛋白编码基因和17条tRNA基因。

The author reviewed the research progress on the study of several Gibberella species of agricultural importance, which represent phylogenetic, biological and chemical diversity of this genus.

选取几种在农业生产上重要的赤霉属真菌来阐述该属在系统发生，生物学和化学上的多样性，并且比较了它们在分类学、遗传学、植物病理学和真菌毒理学方面的差异。

Taking heteronuclear atoms of 87Rb and 41K as an example, we numerically give the unstable region.

并以异核原子87Rb和41K混合凝聚体为例，数值地给出了系统发生动力学不稳定性的区域。

Methods: Analysis and research risk incide nts of clinical supporting system by designed questionnaire and information coll ection.

设计调查表及收集临床风险事件资料，对支持系统发生的风险事件进行分析、探讨。

Moreover, CoI gene was more conservative and a lower evolutionary rate than Cyt b gene. CoI gene was an effective marker in analysing the phylogenesis of families in Passeriformes. It can be used in identifying the species of Passeriformes, but it was revealed that CoI gene was more suitable to identify the phylogenetic relationship of avian family unit than Cyt b gene, and CoI gene can be a molecular marker to identify avian species. But in species identification, CoI gene was less stable and accurate than Cyt b gene. We suggested youd better employ the other marker if you have the CoI gene only.(2) In the phylogenetic trees of birds from Lanius, L.

比较分析了雀形目6科15种鸟类的细胞色素b全序列和CoI基因部分序列，结果显示细胞色素b和CoI基因序列的变异位点分别为454个和366个、简约信息位点为337个和303个，而且线粒体CoI基因比细胞色素b基因略微保守、进化速率也较低；CoI基因在确定雀形目科级阶元之间的系统发生关系方面是一种有效的分子标记，同时它也能够用于雀形目鸟类的物种鉴定，但在物种鉴别方面不如细胞色素b基因稳定、准确。

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。