查询词典 genetic

According to the pig genetic breeding theories and pig national genetic evaluationscheme,The"FOOL"and"WYSWYG"system of the pig breeding management andanalysis which programmed with the OOP's technology was developed with theinterfacial Man-machine conversation There were pig data collection and managementand genetic analysis,providing teledata.

采用最为流行的面向对象的事件驱动编程技术和界面化程序设计方法，运用Visual Foxpro关系管理数据库并结合Microsoft Fortran数值计算语言，编制完成了"所见即所得"的"傻瓜化"种猪育种信息管理与分析系统。

Preserving the best individual, the global best uncoil would be obtained as soon as possible, which can test the astringency of the algorithm ulteriorly. 4 For overcoming cheated problem of genetic algorithm, the paper introduces Boltzmann existent mechanism in genetic operating so that bad result of genetic algorithm also can be accepted, which keeps variety of the colony to avoid the loss of the best uncoil.

4为了克服遗传算法的欺骗问题，本文在模拟退火遗传算法中引入Boltzmann生存机制，从而保持群体中的多样性，防止最优解的丢失。

Genetic differentiation of between and within five eco-geographical groups of E. sibiricus is estimated by Shannon's diversity index, which shown that 68.17% genetic variance existed within group, and 31.83% genetic variance was among groups.

基于Shannon 多样性指数估算了5个老芒麦地理类群内和类群间的遗传分化，发现类群内遗传变异占总变异的68.17%，而类群间的遗传变异占总变异的31.83 %。

Genetic differentiation between and within five eco-geographical groups of Elymus nutans was estimated by Shannon's diversity index, which shown that 42.94% genetic variance existed within group, and 50.76% genetic variance was among groups.

基于Shannon 多样性指数估算了5个垂穗披碱草地理类群内和类群间的遗传分化，发现类群内遗传变异占总变异的42.94 %，而类群间的遗传变异占总变异的57.06 %。

Endangered Abies yuanbaoshanensis will probably have been extinct,so it very necessary to studying its genetic diversity with a proper way in order to save this key group of biological diversity in China.In the present study,AFLP(amplified fragment length polymorphism) markers was used to examine population of Abies yuanbaoshanensis in order to understand the level of population genetic variation and genetic structure.

首先，物种的遗传多样性是长期进化的结果，是其生存和发展的前提，对遗传多样性进行研究可以为分析濒危物种或种群的进化潜力和未来命运提供重要资料；其次，遗传多样性是保护生物学研究的核心之一，不了解种内遗传变异大小、时空分布及其与环境条件的关系，就无法采用科学有效的措施来挽救濒于灭绝的物种、保护受到威胁的物种，对珍惜濒危物种制定合理的保护方针和策略，有赖于对物种遗传多样性的认识。

The method solves the limitation of converging to the local infinitesimal point in medical image segmentation,and adopts the initial algorithm to assure the initial searching scope of genetic algorithm which is better accommodable than standard genetic algorithm with fuzzy C-means clustering,speeding up the convergence of genetic algorithm.

该算法除了解决模糊C均值聚类算法在医学图像分割中容易陷入局部最优解的问题，而且采用的初值化算法比标准的遗传模糊C均值聚类算法能确定更合适的遗传算法的初始搜索范围，从而加速了遗传算法的收敛过程。

Acipenser sinensis ; Protein electrophoresis ; Genetic structure ; Genetic diversity ; Genetic conservation

中华鲟；蛋白质电泳；遗传结构；遗传多样性；遗传保护

Besides, the genetic differentiation also existed among subpopulations. We deduced that the limited gene flow and breeding type were important factors leading to genetic differentiation. The genetic structure of Aristida pennata populations reflected its characteristics of clone reproduction and the good adaption to the severe environments.

本研究认为羽毛三芒草种群遗传多样性很丰富，遗传结构较为复杂，亚种群间遗传多样性大，亚种群间存在一定遗传分化，基因流和繁育方式是导致种群遗传分化的主要因素。

Of the 36 tussah silkworm varieties, the Nei's genetic diversity index was 0.3243±0.1515, and Shannon information index was 0.4871±0.1975, suggesting that bivoltine tussah silkworm varieties are still rich in genetic diversity even having been conserved in the same place for quite long time. Nei's genetic identity of the 36 varieties ranged from 0.4959 to 0.8347, 96.59% of which was above 0.6, revealing large similarity between different varieties. A clustering analysis showed that these varieties formed two separate clades, one of which included varieties bred by the institute and the other included imported varieties from other provinces or countries.

供试品种资源的Nei氏遗传多样性指数为0.3243±0.1515，Shannon信息指数为0.4871±0.1975，表明长期同地保存的二化性柞蚕品种资源同样具有丰富的遗传多样性；供试品种的Nei氏遗传一致性范围在0.4959~0.8374之间，达0.6以上的占96.59%，表明多数品种资源的相似程度较高。36份品种资源分别以辽宁省蚕业科学研究所育成种为主和以国内外引进种为主聚为两大类群。

The results showed that it would gain higher sustainable genetic respons and lower inbreeding rate when implementing BLUP selection in larger population. When the sire-dam ratio was too low, it would not only decrease the genetic response, but also increase the inbreeding rate. To gain higher genetic progress and acceptable inbreeding rate, it should keep enough large population size and feasible sire-dam ratio in practice.

结果表明，扩大育种群规模不仅可以获得更大的持续进展，同时还可有效缓解近交系数的过快上升；育种群中公畜比例过低时，不仅会降低遗传进展，群体近交系数的上升速度也会加快，实际中应保证育种群具有一定的规模和适宜的公母比例。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。