遗传作用

Our analyses showed that distinct epigenetic alterations occur in all three cell types during breast tumorigenesis in a tumor stage- and cell type-specific manner, suggesting that epigenetic changes have a role in the maintenance of the abnormal cellular microenvironment in breast cancer.

我们的分析结果显示，在乳腺肿瘤发生过程中三种类型的细胞均发生了肿瘤阶段特异性和细胞类型特异性的表观遗传改变，提示表观遗传改变在乳腺癌不正常细胞微环境的维持中具有作用。

The results above showed:(1) The cultivars of large-flowered chrysanthemum are widely distributed in Beijing area with plentiful floral types and floral colors;(2) The cultivars with the rare types and colors are urgent for protection;(3) Most of the quantitative characters obeys to the normal distribution,some important traits agreed with skewed distribution.The probability grading can assist quantitative character in establishing new grading standards;(4) Most of qualitative characters is asymmetrical in cultivars,which might be caused by unbalanced differentiation of characters or linkages coming from emphasis characters selection;(5) The floral characters are relatively stable and have comparably large influence on classification,the characters of stipule also have a certain degree of stability and can act as an reasonable supplement for cultivars classification,but the foliar characters have worse stability and can only be recognized as lower level criterion.(6) The genetic relationship among the Flat-petaled group,the Quilled-petal group and the Spoon-petaled group are closest,which followed by the Filiform-petal group because of long-term selection pressure for the specialization of the petal tip loved by most people.The Anemone-petal group has further genetic relationship with these four groups.(7) ISSR molecular marker detection indicates that the proportion of polymorphic loci of lardge-flowered chrysanthemum is higher,in which the Flat-petaled group has the highest genetic diversity level.

综合以上的研究结果表明：(1)北京地区现有大量大菊品种，且花型与花色较为丰富；(2)珍稀花型、花色品种亟需保护；(3)大部分数量性状是符合正态分布的，少数重点观赏性状迫于选择压力呈现偏态分布，概率分级法能够辅助大菊的数量性状建立新的分级标准；(4)大部分质量性状在品种群内的分布是不均匀的，可能是由菊花性状遗传分化的不均衡性或受到选育重点性状的连锁作用而造成的；(5)大菊花部性状相对稳定，对品种分类影响较大，其托叶部分也具有一定程度的稳定性，可以作为品种分类的合理补充，而叶部性状稳定性较差，在品种分类中应作为更次一级的分类依据；(6)平瓣类、管瓣类和匙瓣类的亲缘关系最近，畸瓣类品种花瓣先端特化受到人们的喜爱，长期的选择压力使其区别于3种基本瓣型，而这四种瓣型与桂瓣类在亲缘关系上较远；(7)ISSR分子标记检测表明：大菊品种多态性位点百分率较高，平瓣类品种的遗传分化最为丰富。

The genetic susceptibility of female with lung cancer is higher than that of male.

随着肺癌病因研究的不断深入，遗传因素在肺癌发病中的作用引起了人们的极大关注[1] ，甚至认为遗传因素是肺癌的主要危险因素。

Elegans. In the above experiments we also excluded defects in locomotion and thermotaxis test of 3 mutants coursed interfering on results. Next we tried to investigate the genetic pathway between tph-1, bas-1, daf-2 and foregone genes related to C.

之后将进一步确定所鉴定的基因与已知的影响线虫记忆行为的一些基因之间的遗传关系，发现试验中鉴定的基因与glr-1、dgk-3、eat-4之间存在不同程度的遗传关系，具体来讲，tph-1作为glr-1的上游调节子发挥作用，而位于dgk-3的下游。

Another question, I amblyopic left eye from a young age, I have been worried about Health and your 宝宝 will have the potential of this genetic problem, I do not know if this worry is not unfounded, and now in the streets to see a lot of kids with me Like a child of a Mongolian eyes treated with low-vision, but from people as I know, this approach is the role of too little, so it is worry about not genetic?

另有一个问题，我从小左眼弱视，我一直担心生宝宝会还有这种潜伏性的基因遗传问题，不知道我这种担心是不是多余，现在在大街上能看到好多小朋友跟我小时候一样把一个眼睛蒙起来的方法治疗弱视，但作为过来人的我自己知道，这种办法是没什么太大的作用的，所以很担心会不会遗传？

Dynamic inheritance of rice allelopathy on the root length of receiver plant lettuce (Lactuca sativa L.) and its genotype×environment effects were analyzed by using additivedominant developmental genetic models.

采用包括基因型与环境互作的数量性状加性—显性发育遗传模型，分析了供试水稻对受体植物莴苣幼苗根长化感作用的动态遗传及与环境的互作效应。

On this basis, exploring the method and feasibility to extract terrestrial parameters from hyperspectral and multiangular data. On the inverse problem, we analyzed the error source of model-based inversion, and pointed out the effect of a priori information, merit function, inverse algorithm and strategy on the inverse result.

本文在综合考虑各种算法的优缺点基础上，将基于实编码的遗传算法引入遥感模型反演中，并通过与确定性搜索算法相比较，肯定了遗传算法在解决非线性反演问题中的作用。

Historically, extensive hydrologic connectivity among populations might have facilitated long-distance gene flow and resulted in the pattern of genetic variation revealed in this study, and also played great roles in population dynamics and population persistence of V. spinulosa in this region.

长江中下游湖泊与长江干流历史上高的连通性对刺苦草在这一区域的遗传多样性水平和遗传结构形成起了重要的作用；同时，历史上的江湖一体化格局也促进了刺苦草在这一区域的种群扩散和维持。

The objective of the study is to clarify the effect of MTHFR thermolabile polymorphism on genetic susceptibility of NTD in Chinese population.

目的：应用分子生物学方法进行遗传流行病学研究，探讨MTHFR基因多态性在神经管畸形的遗传易感性中的作用。

Transposable elements are important factors to cause genetic variation and recombination, which are widely spreaded in eukaryotic organisms.

转座元件是一类广泛分布于真核生物的可移动的遗传因子，可以引起基因重组和变异，在物种进化及遗传改良中起着重要作用。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。