查询词典 genetic code

Allelic loss at specific chromosomal loci is a common genetic alteration in human tumours and is thought to be critical for unmasking the recessive genetic changes for tumorigenesis.

人类食管癌的基因丢失研究染色体上座位特异性等位基因丢失是人类肿瘤基因组中一个普遍的遗传改变现象。

The definition and detective methods of genetic diversity were reviewed in this paper. It indicated that these various genetic diversity measuring methods are unreplaceable.

文中对植物遗传多样性的涵义和检测方法进行了概述，认为各种水平的遗传多样性检测方法在特定的研究领域、研究对象中都有不可替代的作用。

Results After six passages in BHK-21 cells, cytopathic effect was observed by microscopy. The rescued virus was rejuvenated once in unweaned mice, and then came back to cell passage. We found that the poly tract of rescued virus was shortened when the virus was passaged twice in BHK-21 cells. Although the data of LD50 in mice and TCID50 in BHK-21 cells showed that the virulence and infectivity of genetic engineering viruses were lower than its parental virus, no significant difference was observed between the genetic engineering viruses with the different length poly tract.

我们发现，基因工程毒在BHK-21上连续传代至第6代时，可见明显的致细胞病变效应(cytopathic effect，CPE)；在经过一代乳鼠接种之后再重新适应到BHK-21细胞的过程中，poly区段出现了缩短现象；乳鼠致病性试验和BHK-21细胞TCID50测定结果表明，尽管基因工程毒与母本毒相比毒力偏低，但含有不同长度poly的基因工程毒之间并无显著差异。

Unweighted Pair Group with Mathematic Average was used to construct genetic tree of all individuals tested based on genetic distance.

对46份样本进行UPGMA聚类，研究结果表明：全同胞的犬在较高的相似水平上聚为l组。3品系犬的遗传背景复杂程度依次为：狼青＞黑背＞草黄。

Or 10.40％ of the variation was partitioned among voltinism populations. The Nm (4. 3065) showed that there was to some extent gene flow among three voltinism populations. The average Nei's genetic identity was 0.9637. The genetic distance between V1 population and cultivated V1 population was the biggest (0.0438) and the less was 0.0370 between V1 population and V2 population.

Nei基因多样性指数也是2化群体最大（0.2631），1化群体次之（0.2485），培育1化性群体最小（0.1709），3个群体之间的遗传分化系数为0.1040，即3个化性群体之间的遗传变异占到总遗传变异的10.40％。3个化性群体之间的基因流达到4.3065，表明化性群体间存在着一定程度的基因交流。3个群体之间的遗传一致度为0.9637，遗传距离以培育1化性群体与1化性群体最大（0.0438），以1化群体与2化群体最小（0.0370）。

At present this procedure can be used to evaluate the genetic effects of individual major genes (up to 2-3 major genes) and the collective genetic effects of polygenes as well as their heritability values.

目前该方法可以检验2～3个主基因的个别遗传效应、多基因整体的遗传效应和两者的遗传率。

Dynamic matrix predictive control algorithm based on genetic algorithm optimizes different chromosomes syngen by genetic algorithm, and gets the most parameter set through decoding the most individual, and counts contemporary control series increment and brings to controlled objects.

基于遗传算法的动态矩阵预测控制算法在每个采样时刻，用遗传算法优化不同的染色体种群，由最优个体解码得到最优参数集，再计算当前控制序列增量并施加到被控对象。

Canalisation is divided into genetic and environmental canalisation; genetic canalisation refers to distinct genotypes producing the same phenotype, while environmental canalisation refers to the same genotype producing the same phenotype in spite of environmental variation.

渠道化分为遗传渠道化和环境渠道化。遗传渠道化是指不同的基因型产生相同的表型；而环境渠道化是指不论环境变异，同一基因型产生相同的表型。

This centre provides research and commercial services in plant gene characterisation, genetic fingerprinting technology and genetic transformation.

该中心提供植物基因鉴定，遗传指纹识别技术，和遗传转化方面的研究和商业服务。

The HMW-GS genetic analysis of 18 hybridized F1 and F2 and backcrossed BC1F1 and BC1F11 by using SDS-PAGE method shows:(1) The band patterns of HMW-GS, having the genetic characteristics of variety stability, were genetically controlled but not affected by environmental factors.

Glu-1位点上的HMW-GS变异对蛋白质含量的影响不显著，蛋白质含量的多少受HMW-GS等位变异的影响较小。在小麦品质育种过程当中，通过改变HMW-GS组成的方式来提高杂交后代的蛋白质含量是不可取的。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。