Generations of selecting for dogs capable of passing a high level performance and social test have naturally created a gene pool better equipped to produce larger percentages of highly trainable , socially adaptable dogs 通过选择有能力通过高水准的考验和社会化测试的犬只，它们将会自然地创造出一个基因库? ?可以较好地产生高百分比的可训性高社会适应性强的犬只的基因库。
As an abundant wild sericultural resource bombyx mandarina is a treasure with much potential in research and development . it could increase the genetic diversity and be used as an important material for the study on the origin of silkworm 野桑蚕作为丰富的野生蚕业资源，是可开发利用的宝贵基因库，用于增加家蚕的遗传多样性和进行品种复壮，同时也是研究家蚕起源分化的重要材料。
Many of the gene banks are in countries where the crop is not native , to make it more likely that the species will survive a disaster . ( the banana bank is in belgium . ) the svalbard vault fulfils this criterion for any seed you can think of 大多数基因库不是位于作物的原产国（橡胶的基因库位于比利时） ，所以为了让这些物种在灾难后能够幸存下来，斯瓦尔巴特种子库履行所有你所能想到的任何种子的规范。
Population dynamics the study of the factors influencing the fluctuations in numbers in a population or of its gene pool : the factors affecting birth and morality rates , immigration and emigration , and reproductive potential ( for example , seed size , dispersal , and dormancy ) 种群动态：主要研究影响种群及其基因库数量波动因素：这些因素影响种群内出生率、死亡率、迁入及迁出、生殖潜力（如种子的大小、传播以及休眠） 。
Because hip dysplasia is passed on genetically , there is perhaps an even graver consequence of the disease remaining undiscovered : if two dogs with undetected dysplasia are bred together , the painful disease will be perpetuated in the gene pool 因为‘髋关节发育不全’是通过基因传递的，这就可能引起一种不容易发现的严重的疾病后果：如果2只狗，有这种病，却未被发现，如果他们进行繁殖，这种痛苦的疾病将在基因库里延续。
In that situation , the ability to figure out how to skillfully extract hidden nourishment or the capacity to remember the perennially shifting locations of critical food items would be advantageous , and so such cleverness would be rewarded by passing more genes to the next generation 那麽一来，想出榨取隐匿营养品的技巧，或是记住重要食物的分布在一年中的变动模式，都是对个体有利的本领，聪明个体的基因在下一世代基因库所?的比例，就会提升。
The build and construction of ecology include the build and construction of green space overall arrangement , the build and construction of the index , the build and construction of seedling security system , the build and construction of bio - diversity system and the build and construction of the technological economic policy security system etc . these classified build and construction present the logic relation with each other : the build and construct of overall arrangement control the green skeleton of the city ; the index plan ensure the green skeleton can exist forever ; the build and constructi on of seedling security system guarantee the index of city green space can put in practice in the light of plan ; the build and construction of bio - diversity system can afford the abundant gene pool for nursery stock system and can ensure the ecological stability of the city ; and the build of the technological economic policy security system can guarantee the implementation of a serious of build and construction upwards successfully 为了符合生态园林城市的定位，绿地系统需紧紧抓住生态建构和景观风貌建构两个方向。其中生态建构包括各类绿地布局建构、指标建构、苗木保障体系建构、生物多样性体系建构及技术经济政策保障体系的建构等。这些分类建构互呈逻辑关系：布局建构控制了城市的绿色脉络，指标规划保障这个绿色脉络得以生生不息，苗木保障体系的建构则保证城市绿地指标得以科学实施，生物多样性体系保障则是为苗木体系提供丰富的基因库，技术经济政策保障体系的建立可以保障以上一系列建构的顺畅实施。
