查询词典 genetic code

One day an infant born with a genetic defect of the bone marrow or blood may be able to have his umbilical cord blood harvested at birth, repaired by genetic engineering and then reinfused, so that he need never suffer the negative effects of his genetic inheritance.

有朝一日，骨髓或血液发生遗传缺失的婴儿，都可用出生时收集的脐带血，以基因工程修复后再输回体内；这样一来，他一辈子都不必为遗传疾病所苦。

The lowest Fst value shows that less genetic variations exist among population of F.gracilipes whic is close to panmictic There is almost no genetic differentiation between populations of F.statice . Genetic similarity is 55.3%~ 65.2% between species of F.tataricum and its related species, which is close to the average level among species in seed plants.

这些种的近交繁育系数 F 值-0.54～-0.80，为随机交配的居群，杂合体过多；营养繁殖为主的金荞麦的FST值最高，相对较多的遗传多样性存在于居群间，长柄野荞麦相对较少的遗传多样性存在于居群间，更接近于自由交配。

The genetic algorithm proposed in this paper is called pseudo parallel genetic algorithm, which is designed by author. This kind of search way improves the basic genetic algorithm.

本文用到的遗传算法是由作者自行设计的伪并行遗传算法，该算法是对基本遗传算法的改进，在收敛速度和全局搜索能力方面远远优于基本遗传算法。

In chapter 2, we proposed a fractal image coding method based on genetic algorithms. The searching scheme problem of domain block in fractal image coding is well solved by applying a robust genetic algorithm with well-selected populations and revised genetic operators. Experimental result has show that it can increase fractal image coding speed by this method.

第二章在简介分形图象编码和遗传算法的基础上，提出了基于遗传算法的分形图象压缩编码方法；通过有目的选择初始群体、改造遗传算子等手段，较好地解决了分形图象编码中的定义域块搜索策略问题，大大提高了分形编码的速度。

Three methods to build soft-sensor model of Radial Basis Function neural network (K-means clustering algorithm, mixed Genetic Algorithm, mixed hierarchical Genetic Algorithm) is investigated and verified in simulation.In the condition of setting hidden layer's node numbers, K-means clustering algorithm and mixed Genetic Algorithm can satisfy online prediction of component content.

研究了三种建立RBF网络软测量模型方法(K-均值聚类算法、混合遗传算法、混合递阶遗传算法)，并进行仿真试验验证。K-均值聚类算法与混合遗传算法在预先设定隐含层节点数的情况下能满足组分含量在线估计。

It is suggested that the historical factors,including severe bottleneck and subsequent genetic drift during Quatemary glaciations and fragmentation in postglaciation,small population sizeandlow seedling establishment would have contributed to such a population genetic structure in A.yunrumensis.Based on these results,strategies are proposed for the genetic conservation and management of A.yunnanensis

建议对所研究的云南穗花杉全部居群予以保护，特别是对云南西畴和贵州兴义市七舍两个具有相对较高遗传多样性的居群应该优先建立就地保护点，以达到最大限度保存云南穗花杉遗传多样性的目的。

"Because of the powerful genetic effects on incubation periods in laboratory animals, vCJD patients identified could represent a distinct genetic subpopulation with unusually short incubation periods for BSE prions, with vCJD so far occurring predominantly in those individuals with short incubation time alleles at these multiple genetic loci, in addition to having the homozygous PRNP genotype of codon 129 methionine," they write.

因为动物实验表现出基因对潜伏期的强力影响，鉴定vCJD病患表现出清楚的基因次族群和BSE传染性蛋白质的不寻常短潜伏期；vCJD病患目前显著地发生在短潜伏期对偶基因者，密码子129蛋氨酸的PRNP 基因是同型合子。

Here, we examined the genetic diversity and phylogeographic structure of domestic goats by determining mitochondrial DNA and microsatellite DNA. The genetic diversity of five goat breeds including Angora goat, Shandonglaiwu black goat, Hanshan white goat, Taihang goat and Wuzhumuqin goat was surveyed using twenty-five microsatellite loci, The UPGMA phylogenetic trees constructed with the Dcoa genetic distances between the five goat breeds supported a closer relationship between Hanshan White goat and Wuzhumuqin goat.

利用微卫星和线粒体DNA分析山羊的遗传多样性及系统进化关系，用25个微卫星位点分析了安哥拉山羊、山东莱芜黑山羊、罕山白绒山羊、太行山羊及乌珠穆沁绒山羊这5个山羊品种的遗传多样性，利用共祖遗传距离的UPGMA聚类表明遗传距离和地理距离是一致的，如内蒙的罕山白绒山羊和乌珠穆沁绒山羊聚到一起。

Here, we examined the genetic diversity and phylogeographic structure of domestic goats by determining mitochondrial DNAand microsatellite DNA. The genetic diversity of five goat breeds including Angora goat, Shandonglaiwu black goat, Hanshan white goat, Taihang goat and Wuzhumuqin goat was surveyed using twenty-five microsatellite loci,The UPGMA phylogenetic trees constructed with the Dcoa genetic distances between the five goat breeds supported a closer relationship between Hanshan White goat and Wuzhumuqin goat.

本研究利用微卫星和线粒体DNA分析山羊的遗传多样性及系统进化关系，用25个微卫星位点分析了安哥拉山羊、山东莱芜黑山羊、罕山白绒山羊、太行山羊及乌珠穆沁绒山羊这5个山羊品种的遗传多样性，共祖遗传距离的UPGMA聚类表明遗传距离和地理距离是一致的，如内蒙的罕山白绒山羊和乌珠穆沁绒山羊聚到一起。

Symmetric code ; genetic algorithms ; partial genetic inheritance ; robot optimal control ; trajectory planning

对称编码；基因算法；部分基因继承；机器人优化控制；路径规划

Newly designed quick-refill fuel tank cap and dust proof radio box back-up their impressive form by also contributing to the low center of gravity.

新设计的快速填充油箱盖和防尘电台方块备份其令人印象深刻的形式也有助于低重心。

The book is a spin-off from his master's thesis.

这本书是他的硕士论文的派生作品。