变异比

According to the analysis of the variation expectation value, species differentiation time in the CH4 sub-region phylogenetic tree, we found that Chinese sturgeon and the theoretical common ancestor of the other five sturgeon form the first bifurcation of the tree, while, among the five left, Amur sturgeon and Huso sturgeon, Russian sturgeon and Siberian sturgeon, Siberian sturgeon, Sterlte itself form another three bifurcations respectively.

通过对CH4区序列氨基酸变异期望值，物种分化时间及物种间系统进化树等参数的分析，将克隆的5种鲟鱼IgH恒定区序列与已发表的西伯利亚鲟同源序列比对后发现：西伯利亚鲟与俄罗斯鲟、施氏鲟与欧鳇、小体鲟各构成一个分支，并与中华鲟相对。

From using the same cervida for the Hydropotes intermis mitochondrial gene and its ratio of cytb,Detected 140 bp Variable sites,Insertion and deletion were not found.By comparison.

本文测定了麋鹿线粒体cytb基因全序列，并对麋鹿线粒体cytb基因全长1140bp进行了分析，利用同为偶蹄类鹿科的獐子线粒体cytb基因与其比对，检测到了140个变异位点，未发现插入和缺失。

Moreover, when changing the equivalence ratio of isocyanic acid ester and hydrogen class compound, solid's performances also change along with it.

并且，改变异氰酸酯和含活泼氢类化合物的当量比，因交联密度的不同，所得的固结体的性能也随之有所变化。

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。

Karyotypic findings showed that all cultivars were mixoploid with chromosome number ranging from 49 to 57, and 54 was the most frequent number observed.

结果表明：（1）17个栽培小菊均为混倍体，染色体数在49～57之间变异，以54条为主；（2）染色体呈现多态性：多数品种由中部、近中部和近端部着丝粒染色体组成；最长与最短染色体的比值为1.62～2.39；臂比＞2的染色体所占的比率为11.11%～29.62%；核型不对称系数为59.74%～63.37%；3个地被菊品种和'奥运橙光'、'金陵白凤'（2n=53）核型类型为&2B&，其它品种为&2A&型。

These results indicated that the genetic variation within exon 2 appeared to have largely arisen by gene recombination and balancing selection. Alignment of the deduced amino acid sequences of the β1 domain coded by exon 2 revealed 6 synonymous mutations and 27 nonsynonymous substitutions at the 33 disparate sites.

对B-LBⅡ等位基因第二外显子所编码的B-LBⅡ分子β1结构域氨基酸序列比对发现，31个B-LBⅡ新等位基因属于26个等位基因主型；在β1结构域氨基酸序列的33个变异位点上，存在6个同义替换和27个错义替换。

In this text, comparing the yak with other genus of Bovinae on paleontology evidence, morphologic character, blood protein polymorphism, microsatellite polymorphism, mtDNA sequence variance, rDNA RFLP data and sequence information of function gene, we find that the yak shows difference in Bos taurus, Bos indicus but close with Bison bison either in paleontology evidence, morphologic character or molecular biology character. So it was better to be considered as one independent genus Poephagus than to subgenus Poephagus or a species of Bos.

本文通过对牦牛与牛亚科其他属在古生物学证据、形态学特征、血液蛋白多态性、微卫星多态性、mtDNA序列变异、rDNA的RFLP数据和功能基因序列信息等各方面研究资料的比较分析，发现牦牛无论在古生物学证据、形态学特征，还是在分子生物学特征上均表现出与牛属中的普通牛Bos taurus、瘤牛Bos indicus不同，而与美洲野牛Bison bison的亲缘关系更近一些，因此将牦牛划分为牛亚科中1个独立属，似乎比将牦牛作为牛属中的1个亚属或1个种更合适。

Results indicate that Alpine meadow is higher than Alpine shrubland in

结果表明，草甸样地的粘粒含量、P_、N_、ORG、P_、N_、K_的含量都高于灌丛样地，且两样地速效养分差异极其显著，但草甸样地土壤的ORG、N_、K_的变异系数却明显小于灌丛样地，特别是K_的CV值，灌丛样地比草甸样地高出了53.37%；相关分析还表明，相对于草甸，灌丛样地中各养分元素之间的相关性明显增强。

The spatial variability of soil salt content, electrical conductivity, pH and sodium adsorption ratio was analyzed by using traditional statistics and geo-statistics in a typical degraded wetland of saline sodic soils.

以苏打盐渍土区典型退化湿地为研究区，运用经典统计学和地统计学相结合的方法研究了退化湿地盐碱化指标：土壤电导率、盐分含量、pH和钠吸附比的空间变异特征，绘制了4种指标的空间分布图。

The results show that: Basic density,tracheid length,tracheid width and the ratio of the tracheid length and width increase from core to bark; basic density has a small decrease from base to top,but the change is not significant;The tracheid length,tracheid width and the ratio of the tracheid length and width increase step by .step from the base up to certain height and then decrease by degrees.

基本密度自树干基部向上呈减小趋势，但变化不大；管胞长度、管胞宽度及管胞长宽比自树干基部向上呈&小—大—小&的变异规律；木材的化学成分含量和PH值除抽提物含量随着树高的增加而下降外，其它指标在树高方向上的变化未呈现明显规律性。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。