查询词典 genetic

The normal hybrid genetic algorithms include genetic algorithm combined with steepest descent method and simulated annealing genetic algorithm.

常见的混合遗传算法有遗传算法与最速下降法相结合、遗传算法与模拟退火法相结合。

Soybean evolution from the ancient tetraploid flowers pollinate crops since the diplont, low level of genetic variation within species, genome larger and contains extensive areas of reproduction and rich repeat sequences, chromosome and small cells to carry out genetic research, which makes soybean genetic map study clearly behind other cr...

大豆是由古四倍体演变而来的二倍体自花授粉作物，种内遗传变异程度低，基因组较大并含有广泛的复制区和丰富的重复序列，染色体又很小，难于进行细胞遗传学研究，这使得大豆遗传作图研究明显落后于其它作物。

The random amplified polymorphic DNA and inter-simple sequence repeat analysis were used to estimate population genetics of Fenneropenaeus chinensis. We analyzed the genetic diversity and genetic structure of the populations, and also studied the genetic divergency among populations and geographic populations.

本文以中国对虾野生群体为研究对象，采用RAPD和ISSR分子标记技术，进行了群体遗传学的研究，对中国对虾野生群体的遗传多样性及群体遗传结构进行了分析，研究了中国对虾各野生群体之间的遗传分化情况。

The theory and the implementation of the genetic algorithms are discussed in detail. The question on how to choose the crossover probability, the mutation probability, the scale of population and the numbers of the generation is discussed. Then, the mathematics model of the optimal design is established. Exerting the finite element of elastic base beam and using FORTRAN to write the GAFORTRAN program. The program includes the common genetic algorithms and the modified genetic algorithms.

详细介绍了遗传算法的理论和实现技术，探讨了交叉概率、变异概率、群体规模、进化代数等变量的选取问题，建立起了基于遗传算法的深基坑支护结构设计的优化模型，结合弹性地基梁有限元法，利用FORTRAN语言编制了GAFORTRAN优化程序，程序中包括普通遗传算法和改进遗传算法。

Ecological analysis of morphological and genetic variation revealed that:(1) The averages of morphological characters were significantly negatively correlated with WSF (2) Dominant frequencies of some RAPD loci were significantly correlated with WSF (3) The correlation between morphological variation and genetic variation was not significant (4) The cluster analysis based on morphological and genetic evidence supported that all population can be divided into three ecotypes: saltmarsh reed, freshwater reed and giant reed.

相关分析表明：种群内各形态特征的平均值均与水盐联合影响因子显著负相关，但种群内形态变异系数与水盐联合影响因子普遍相关不显著；种群遗传多样性指数与水盐联合影响因子相关不显著，但部分生境倾向型的RAPD位点的显性频率和来自等位酶分析的克隆多样性水平与水盐联合影响因子显著相关；形态变异系数与遗传多样性指数相关不显著，但相关系数均为正值。

This study showed that population genetic diversity was much lower than other Gymnosperm and there was no distinct genetic differentiation among individuals in this population. In order to protect or preserve its genetic resource,it is suggested that the most individuals in the population should be selected as we can.

研究结果表明：AFLP方法是一种十分有效的检测种群遗传多样性的分子标记，既具有可靠性又有方便高效性；元宝山冷杉种群的遗传多样性水平很低，种群内各个个体间的相似性系数很大，遗传关系很近，无明显的遗传分化，这说明该种群的适应能力差、进化潜力有限，濒危程度很高；若要保护或保存这个物种的遗传资源，建议应该选择种群内尽可能多的个体进行保护。

Genetic similarity and genetic distance between wild and gynogenesis population were 0.9036 and 0.10 14, respectively. Genetic distance was higher than average level between geographical populations of fish.

牙鲆雌核发育群体与野生群体之间的RAPD遗传相似度I=0.9036，遗传距离 D=0.1014，已超过一般鱼类地理种群之间的遗传距离值。

Available data on helminth genetic variability have shown that most helminth populations exhibit different levels of genetic variation resulting mainly from the pattern of life cycle,geographical distribution and parasite-host interaction,and several hypotheses have been proposed to explain the genetic variation.

应用这些遗传标记的研究表明，大多数寄生蠕虫群体遗传结构有不同水平的变异，这些变异的产生主要与寄生虫的生活史和群体生态、宿主的地理分布和环境等因素有关，并因此提出了有关遗传变异的一些假说。

The C-banded heterochromatin of satellites of Ae.tauschii can be used as a marker in genetic research and genetic research and genetic manipulation.

但是不同节节麦居群间5D染色体上的这个随体C带存在多态性。5D染色体上的随体区域可以作为小麦遗传分析和遗传操作的标记性状。

Being an excellent molecular genetic marker, SSR has been widely applied in many fields including detection of genetic diversity, germplasm identification, genetic linkage map construction, gene mapping and molecular marker-assisted breeding.

SSR是一种优秀的分子遗传标记，已经广泛应用到遗传多样性检测、遗传种质鉴定、遗传连锁图谱构建、基因定位与标记辅助育种等多个领域。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了