遗传地

The given Branch and Bound method can find out the optimal solution of the problem in small size while the given GA implement can quickly find out the approximate optimal solution of the problem in large size. The given GA implement proves to be very effective by numerical experiments and examples.

对于问题的较小规模情形分支定界法能精确地求得最优解；对于问题的较大规模情形遗传算法能很快地求得近似最优解；算例及大量实验表明用遗传算法来求问题的近似解是成功的。

In view of the fact that the O. t. dybowskii are in imminent danger, first, must take importance to protection of wintering areas;Next, must try our best to protect the important breeding areas;Finally, establishes a population including existing genetic diversity for reintroduction, thus enable it to get rid gradually is in imminent danger, achieves the bustard species protection the goal.

鉴于东方亚种的濒危境地，首先，要重视越冬地的保护；其次，要保护好重要繁殖区：最后，建立一个拥有现有遗传多样性水平的迁地保护种群，既可避免其遗传多样性的进一步丧失，又可为扩大野外种群的规模奠定基础，从而使其逐渐摆脱濒危境地，达到大鸨物种保护的目的。

The result shows that the method is effective in improving the computational convergence and overcoming the premature of simple genetic algorithm in some degree.

结果表明，自适应遗传算法在保持简单遗传算法优点的同时，有效地提高了算法的收敛性，并在一定程度上克服了简单遗传算法的早熟问题。

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。

Methods Microsatellite markers of mice and rat were adopted to develop markers and methods suitable for genetic monitoring for SPF golden hamster population and its parent conventional population from Chengdu Institute of Biological Products by fluorescence-based semi-automated genotyping method. Genetic diversity and differences of the 2 golden hamster populations were analyzed based on the result of microsatellite alleles.

应用小鼠和大鼠的微卫星标记筛选适于金黄地鼠遗传检测的微卫星标记，并结合微卫星荧光标记－半自动基因分型技术，对成都生物制品研究所的SPF级金黄地鼠及其来源的普通级金黄地鼠进行遗传检测，计算其群体遗传学参数。

Samples in transitions of filters are optimized, which solves the problem that values obtained by look-up table method are not optimums. Aiming at prematureness appearing easily when GQA is used to optimize continuous functions with many peaks, IGQA is proposed.

针对遗传量子算法在优化连续多峰函数时易出现早熟的问题，提出一种改进遗传量子算法，典型函数测试表明，IGQA的性能优于GQA和其它几种遗传算法，收敛速度快，全局寻优能力强，能有效地克服早熟现象。

A new mathematical model of intelligence test paper generation system was set up. To avoid slow-convergence and local convergence of simple genetic algorithm, a kind of improved genetic algorithm was proposed in this paper.

建立了一种新的试卷矩阵数学模型，提出了改进的遗传算法编码方式，并通过改进初始群体的产生方法和遗传算子，有效提高了遗传算法的收敛速度，并较好地避免了局部收敛现象。

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。

These results showed that thegenetic diversity of Schima superba and Cryptocarya chinensis distributed equally inthe subpopulations and the genetic diversity of Castanopsis chinensis distributedunequally in the subpopulations.

可见荷木和厚壳桂的遗传多样性是较均匀地分布在各个亚种群中，而锥栗的遗传多样性在各个亚种群中分布不均匀，每个亚种群都有自己独特的遗传多样性形式。

To learn the information about the genetic background of the cultivation and wild germplasms of Platycodon grandiflorum assisting of its breeding and studies on genuine characteristics, the genetic diversity of 92 samples （including 20 cultivation and 3 wild germplasms, and 5 genetic materials） were analyzed by RAPD markers.

为了解桔梗栽培种质、野生种质的遗传背景，为桔梗育种及道地药材研究提供依据，采用RAPD方法分析了桔梗20份栽培种质、3份野生种种质及5份遗传材料共92个样品的遗传多样性。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。