查询词典 The Gene Generation

1Niche construction can lead to stable coexistence of diverse genotypes in spatially structured population, which supports a stable polymorphism even without heterozygote superiority.(2)With habitat deterioration, niche construction accelerates the formation of steady polymorphism and hence impedes the harmful influences of environment on the population, which might embody a life-history strategy of organism under the unfavorable environment.(3)Niche construction results in the coexistence with alternative polymorphism through genotype-environment feedback and limited gene flow.(4)The niche-constructing organism is an active force to alter its environment and hence the direction of natural selection in order to better survival.(5)Spatial dynamics and distribution pattern of metapopulation are profoundly influenced by time-lagged niche construction.(6)Metapopulation size can reach a fixed level in the recency effect and equal weighting of time lag but is statistical stability in primacy effect, which implies the primacy effect is most remarkable.(7)The increment in the relative weightingof each generation\' niche construction and the length of time lag are significant factors for system destabilization.(8)Moderate capacity of positive niche construction benefits the metapopulation persistence.(9)The narrowing of niche breadth can decrease the metapopulation size and thereby increase the extinction risk.(10)The coupled function of time lag and niche construction make the system oscillation and generate the spiral wave, spiral-broken and circular wave in heterogeneous habitat.The spatial distributions of metapopulation and resource content are complementary due to a phase lag of their both frequencies.(12)Metapopulation persistence with niche construction depends not only on the balance between colonization and extinction, but also on the balance between the ability of niche construction and natural dissipation of habitat.(13)Metapopula-tion can survive under certain condition when the percent of suitable patches in habitat is lower than the ration of extinction to colonization.(14)Two thresholds exist in the process of transition of habitat quality dynamics from unsuitable to suitable, which include the intensity of niche construction and the initial condition of system.(15)Metapopulation size is positive correlated with the ability of positive niche construction, which means that organism or population who has strongly positive influences on their environment plays an important role to maintain the available habitat.

通过上述几个方面的研究，主要得出以下15条结论：(1)生态位构建可使空间结构种群，甚至是在没有杂合子优势的条件下，形成多种可能的稳定基因型分布模式；(2)随着环境的破坏与恶化，种群的生态位构建作用加速其较早形成稳定多态以阻碍环境对种群的不利影响，解释了有机体在不利环境下的一种生活史对策；(3)生态位构建作用通过基因型—环境反馈机制及有限的基因交流导致基因型多态的稳定共存；(4)有机体的生态位构建作用是一种积极的动力改变环境进而改变其自然选择的方向；(5)生态位构建的时滞作用对集合种群动态和空间分布产生深刻影响；(6)集合种群大小在时滞的崭新效应和等权重效应下达到一固定值，而在首位效应下达到统计稳定，表明首位效应的影响最显著；(7)首位效应下生态位构建相对权重的增量和时滞的长度是影响系统不稳定性动态的关键因素；(8)适中的生态位构建强度有利于集合种群的续存；(9)生态位宽度变窄会减少集合种群的数量从而增加其灭绝风险；(10)时滞和生态位构建的双重作用使系统产生周期振荡，并在异质性环境中产生稳定的螺旋波，破碎的螺旋波和环形波三种分布模式；(11)集合种群与资源含量的空间分布因为相滞而互补；(12)具有生态位构建的集合种群续存不仅取决于侵占率与灭绝率之间的平衡，而且依赖于生态位构建能力同其生境的自然消耗速率之间的妥协；(13)当生境中适合侵占的斑块比例小于其侵占率与灭绝率之比时，生态位构建作用促使集合种群在一定条件下续存：(14)生境斑块的状态从不适合到适合转变过程中存在生态位构建强度和系统初始条件这两个阈值；(15)集合种群的大小同正生态位构建能力正相关，意味着对环境具有较强正作用的有机体对维持有效生境起积极作用。

The mesentery arteries of hypertension patient and patient with normal blood tension were used in my study, the ion channel change which might involved in the generation and development of hypertension was investigated further through the comparative studies on the expression of compositive subunit gene of large conduction calcium—activated potassium channels in vascular smooth muscule of mesentery artery, so more experimental datas were provided to elucidate the pathological mechanisms of hypertension.

本课题选取原发性高血压患者和正常血压患者的肠系膜动脉，对肠系膜动脉血管平滑肌大电导钙激活钾通道组成亚单位基因表达进行对比研究，进一步探讨原发性高血压发生发展过程中可能的离子通道改变，为高血压发病机制的阐明提供更多的实验依据。

Results: ApoD was observed positively expressed in type2 astrocytes and oligodendrocytes from O2A lineage, while it was not expressed in type1 astrocytes from T1A lineage. Accordingly, we can verify the phenomenon found in the study of T1A and T2A gene different expression profile that ApoD mRNA was highly expressed in T2A and lowly expressed in T1A. Conclusion: It can be concluded that lipid metabolism related genes such as ApoD play important roles in the generation and differentiation of O2A lineage, which closely correlate with internal mechanism of lipid metabolism in the brain and myelogenesis.［Key words］astrocyte(T1A, T2A); oligodendrocyte; O2A lineage; apolipoproteinApoD

我们已采用基因芯片技术在mRNA水平研究两型星形胶质细胞的基因表达谱差异，发现ApoD在2型星形胶质细胞中差异高表达，故本文拟用激光共聚焦双重免疫荧光标记技术进一步在蛋白质水平观察ApoD在体外分化成熟的两型星形胶质细胞以及少突胶质细胞中的表达情况，以期为我们深入研究ApoD等脂代谢相关基因在脑内脂质代谢和神经髓鞘发育机制中所起的作用提供有用的实验依据，依此探讨胶质细胞发生和分化的信号机制。

The wheat transformation frequency was between 0.33~0.66%, and cultivated time was only about 3~4 months.4 Through the hybridization of Anhui local wheat cultivated variety and the herbicide resistance variety which is including Bar gene by genetic engineering, the herbicide resistance F1 generation plant were obtained which was self-crossed or backcrossed with Anhui variety.

转化周期为3~4个月左右。4 杂交育种以含Bar基因的抗除草剂小麦基因遗传工程体为基因供体，与安徽品种进杂交，获得的F1后代均为抗性植株。

If the human gene pool can be seen as a sort of species-wide natural resource, it's only sensible for the rarest of those genes to be husbanded most carefully, preserved so that every generation may enjoy their benefits.

如果人类的基因库被视为一种物种的自然来源，那么明智的做法就是要倍加小心地去培养、保护那些最罕见的基因。这样，每一代人都会从中受益。

You BE Evolution incompletely of life body, gene mutation of Alien, The senior high school of kindergarten degree living, inborn Mongolia the frog head of disease, The abandoned baby of Mount Everest snow man, the septic tank stop of murderer, The Africa make top black*of descendant, the yin and yang out of tune chimpanzee, The hippo been ran over by the Noah's ark, new volcano eruption, Super big shameless transmit sound to expand a sound trumpet, the humiliation of the Eskimo, With cockroach coexistence live of super individual, the vitality putrefied half plant, Will send out bad smell of**person,"cast off" the source head of word, Everyday deteriorate three time dinosaur, mankind history top most strongly discard a material, God lose the old washer which fall off, ability thinking of have no head living creature, Damage the disaster of compatriot fame in Asia, the ancestry receive for it abashed of descendant, The Fu of deposition thousand years plant quality, the scientist also dare not a research of originality species, The deposition raw material of 1000% petroleum densities, is disfigure of McDonald's uncle, Be like your this kind of damned guy: Only one Tuo muck that can play the inside of the television drama, Canned not compare with a wayside the chewing gum be spread urine by the dog, Connect such as flower all handsome you 1000% above, Seek the girl friend get to even want to leave the Earth to the zoo, Wanting to commit suicide would someone advise you and don't leave corpse in order to prevent a pollution environment, You once touched of keyboard top connect rice the protozoa all live not bottom go to, Jet come of the saliva return than the SARS fatal, Pack the lovely words can the moment solve population inflation of problem, Play cool pack handsome words mankind to have to use asexual reproduction, The idiocy can be you of teacher, mentally retarded can teach you how to say person's words, Want ～only your rise ozone layer meeting hole Wanting to immigrate Mars is in order to leave you, If you of ugly can generate electricity of the nuclear power station of words whole world can be with the lockout, The words bullet missile fight would be unbearable to fly toward you, The hand grenade see you would from explode, Other people would not° until open an airplane to bump a pair of son star line but you as long as bail out and then have same of power, All of the famous spot that you have been to change historic monument, you have been to of the historic monument will become history, 18 generation son all have no stem good matter would understanding you, connect throw into the sun all suspicion not enough environmental protection Anyway horizontal Shu a words:Don't let me see you again, if saw you, I must put out you!

你是 进化不完全的生命体，基因突变的外星人，幼稚园程度的高中生，先天蒙古症的青蛙头，圣母峰雪人的弃婴，化粪池堵塞的凶手，非洲人搞上黑*的后裔，阴阳失调的黑猩猩，被诺亚方舟压过的河马，新火山喷发口，超大无耻传声扩音喇叭，爱斯基摩人的耻辱，和蟑螂共存活的超个体，生命力腐烂的半植物，会发出臭味的**人，&唾弃&名词的源头，每天退化三次的恐龙，人类历史上最强的废材，上帝失手摔下来的旧洗衣机，能思考的无脑袋生物，损毁亚洲同胞名声的祸害，祖先为之蒙羞的子孙，沉积千年的腐植质，科学家也不敢研究的原始物种， 10倍石油浓度的沉积原料，被毁容的麦当劳叔叔，像你这种可恶的家伙：只能演电视剧里的一陀粪，比不上路边被狗洒过尿的口香糖，连如花都帅你10倍以上，找女朋友得去动物园甚至要离开地球，想要自杀只会有人劝你不要留下尸体以免污染环境，你摸过的键盘上连阿米吧原虫都活不下去，喷出来的口水比SARS还致命，装可爱的话可以瞬间解决人口膨胀的问题，耍酷装帅的话人类就只得用无性生殖，白痴可以当你的老师，智障都可以教你说人话，只要你抬头臭氧层就会破洞要移民火星是为了要离开你，如果你的丑陋可以发电的话全世界的核电厂都可以停摆，去打仗的话子弹飞弹会忍不住向你飞，手榴弹看到你会自爆，别人要开飞机去撞双子星才行而你只要跳伞就有同样的威力，你去过的名胜全部变古迹，你去过的古迹会变成历史， 18辈子都没干好事才会认识你，连丢进太阳都嫌不够环保反正横竖一句话：别让我再看见你，要是见着了你，我一定要把你灭了！

Northern blot analysis showed that the GFP gene was correctly expressed in the transgenic plants. Green fluorescence was observed in roots and immature embryos of transgenic plants by fluorescence microscopy.Progeny analysis showed that GFP insertions were inherited in T_2 generation with normal expression.Both Mendelian and non-Mendelian inheritances were observed in T_1 progenies of transgnic maize,and non-Mendelian inheritances were observed in T_2 progenies.

Southern blot结果表明GFP基因以低拷贝数、简单的方式(1～3条Southern杂交带)整合到玉米基因组；Northern blot结果表明GFP基因在转录水平上表达；在转基因植株的根和幼胚中观察到GFP表达；转基因植株的后代遗传分析表明GFP基因能够遗传至T_2代并正常表达，部分转基因株系中的GFP基因以孟德尔遗传方式传递给T_1代，但T_2代不符合孟德尔分离比。

May conclude between two generation of person's sibships according to DNA, because a child always separately obeys the father on the compatible mother body to accept half gene material.

根据DNA可以断定两代人之间的亲缘关系，因为一个孩子总是分别从父亲和母亲身上接受一半基因物质的。

METHODS: Human AMSCs were isolated in vitro sterilely. At the third passage, 0.5 mL single cell suspension at 1×109/L was obtained and transplanted by tail venous pathway in transplantation group mice, Mice in the control group were injected with an equal volume of saline. APP-gene mice in the normal group were left intact. 5'-bromo-2-deoxyuridine labeled third-generation AMSCs expression was detected in mice brain tissue by immunohistochemical method.

无菌条件下体外分离培养人羊膜间充质干细胞，传至第3代将细胞浓度调整为1×109 L-1，经尾静脉注入0.5 mL至细胞移植组转APP+基因小鼠体内；对照组经尾静脉注入同体积的生理盐水；正常组转APP-基因小鼠不给予任何干预措施。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失