查询词典 genetic

The preserved species may lack genetic representativity because of poor sampling. Inappropriate plantations, inadequate records and unclear kinships jeopardize endangered species to genetic confusion, inbreeding depression or outbreeding depression.

由于引种或取样的不足，容易导致被保存的物种缺乏足够的遗传代表性；盲目的引种、不合理的定植以及材料的来源不清则会导致稀有濒危植物的遗传混杂、近交衰退或杂交衰退；人为选择和生长环境的改变也容易造成濒危物种对迁地保护的遗传适应。

An alternative "informational" approach to this problem led to the view that the two fundamental aspects of sex, genetic recombination and outcrossing, are adaptive responses to the two major sources of "noise" in transmitting genetic information.

针对这一问题，一个选择性"信息式"研究探讨产生了这样的观念，认为性的两个基本方面是对遗传信息传递中两个主要的"噪音"来源的适应性反应。

There was a positive correlation between the level of genetic diversity and the outcrossing rate of weedy rice populations, indicating that the introgression from cultivated to weedy rice may enhance the genetic diversity of weedy rice populations.

辽宁省六个地区杂草稻的遗传多样性水平从低到高的顺序与杂草稻发现时间从早到晚的顺序非常相似，据此推测杂草稻的遗传多样性水平可能与治理杂草稻的强度和时间有关系。

The genetic diversity were comprehensive analyzed in this project through comparative study with the growth rhythm, morphology, palynology,cytology and chemical ingredients of 16 populations of pinellia ternata, which were collected from all around the country, applied computer techniques to analysis the DNA amplification electrophoresis chromatogram of 10 populations of pinellia ternata as well. The genetic relationship of the nature populations in different ecological region are confirmed. Populations of Pinellia ternata were classified on internal species.

本项目通过对从全国各地收集的16个半夏居群间的生长节律、形态学、孢粉学、细胞学、化学及其中10个半夏居群的DNA片断扩增后的电泳图谱比较研究及计算机数据分析技术，对半夏的遗传多样性进行综合分析，初步确定了我国不同生态区半夏各自然居群的遗传关系，划分了种以下单位。

Tenth. A series of mathematical model of genetic mechanism of common population have been established,they are mathematical description of genetic mechanism of common population, so the population that the population genetics researching have extended from panmixia population, inbreeding population,selfing population to common population. It will start the new research territory of population genetics and promote its development.

本文建立了普通群体遗传机制的一系列数学模型，这是对普通群体遗传机制的数学描述，它使群体遗传学所研究的群体由随机交配群体、近亲交配群体、自交群体扩展到普通群体。

To date, the panmixia hypothesis has remained unchallenged: genetic studies realized on eel's mitochondrial DNA failed to detect any genetic structure; and a similar lack of structure was found using allozymes, with the exception of clinal variation imposed by selection.

到目前为止，随机交配假说尚未得到挑战：通过线粒体研究未发现鳗鲡存在遗传结构，而利用同工酶也得到缺乏遗传结构的相似观点，而因选择引起的渐变群变异是例外。

Parallel implementation of Genetic Algorithm provides a feasible method to speed up convergence rate of Genetic Algorithm.

遗传算法的并行实现为提高遗传算法的收敛速度提供了一种可行方法。

The core designs of genetic algorithm are design of parameter coding, initial group, adaptitude function, controlling parameter and genetic operators. On other words, they are designs of choose operators, exchange operators and aberrance operators.

遗传算法的核心是参数编码、初始群体的设定、适应度函数的设计、控制参数设定、遗传算子的设计即选择算子、交换算子和变异算子的设计。

The modified genetic algorithm has been used in parametric optimization of a sliding-vane compressor, by which the result shows that the modified genetic algorithms is reliable and efficient, as proved by the reasonable parameters.

并且尝试了将改进的遗传算法用于滑片式压缩机参数的优化，结果表明，经过改进的遗传算法有效可靠，经过优化的压缩机参数合理。

Some improvement of genetic algorithm is presented. Fuzzy evaluation is applied to parataxis choosing genetic algorithm to get better solution which satisfied both integral demand and individual demand of object functions.

把多准则模糊优选理论应用于并列选择遗传算法，从而得到即满足整体的最优性，又尽可能的逼近各子目标最优值的非劣解。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。