染色体

An organism having a euploid chromosome number.

位点是基因在染色体的位置。

Aneuploid cells with chromosome numbers less than 30 were discovered in 6 varieties. The study proved that the basic chromosome number was very stable and extreme climate might be the inducing reason for the euploid and aneuploid.

为此本研究特对广西、广东茶区共10个茶树品种的染色体数目进行观察分析，以期完善这一区域茶树品种资源细胞学的研究，并为指导茶树育种实践提供细胞学依据。

Results: miR27a was identified as the most stable reference gene by geNorm and Normfinder software. Among the 52 microRNAs detected by real time PCR array, miR-33 and miR-19a were significantly down-regulated, whereas miR-130 were significantly up-regulated in the hippocampus of Ts65 Dn mice as compared with the euploid control mice. The expression of miR-802, which was the trisomy chromosome 16 derived microRNAs, was very low in hippocampus with no difference between the two groups.

结果：geNorm和Normfinder两种方法均选定miR-27a为最稳定的内参照基因，共检测了52种microRNAs，其中miR-33和miR-19a在Ts65Dn小鼠海马组织中表达显著下调，miR-130在Ts65Dn小鼠海马组织中表达显著上调，小鼠16号染色体三体区段包含的miR-802在Ts65Dn小鼠和对照二倍体小鼠海马组织中表达量均低，差异没有统计学意义。

The dominant male sterility was expressed normally in the new Taigu genic sterile wheat carrying the intergenomically translocated Ms2, and the female fertility mechanism in its male sterile plants was normal as well. Observation of the chromosome configuration at meiosis of pollen mother cells of the young ears of the sterile plants showed that they were euploid plants (2n=42). No configurations different from those of the Taigu geneic sterility gene located at the original locus were noticed of the Ms2 intergenomically translocated back into the common wheat.

所获携带易组Ms2基因的新型太谷核不育小麦其显性雄性不育特性表达正常，且雄性不育株的雌性可育机制正常，对不育株幼穗花粉母细胞减数分裂期染色体构型的观察可见其为整倍体(2n=42)，尚未发现回归普通小麦的易组太谷核不育基因与原位点的太谷核不育基因有不同的表型。

Euploidy The normal state in which an organism ' s chromosome number is an exact multiple of the haploid number characteristic of the species.

整倍性：正常状态下，生物体染色体数是此种生物单倍体数目整数倍的现象被称为整倍性。

The common features of imprinted genes are, clustering of multiple imprinted genes in one chromosomal region (around 80%), conservation of imprinting among eutherian mammals, asynchrony of DNA replication of imprinted genes, temporal and spatial regulation of expression of imprinted genes, coding for untranslated RNAs as well as proteins, antisense transcripts may regulate expression of imprinted genes. Once established, the imprinting pattern is stably transmitted through cell division but reset in germ cells of the fetal gonads.

约80%的印记基因呈串出现在染色体上；在哺乳动物品种之间，印记基因具有较高的保守性；印记基因的复制通常表现为不同时性；一些印记基因具有印记遗传的时空性；少数印记基因只转录为mRNA而不翻译成蛋白质；印记基因的反意链通常表达，表达产生具有调节印记基因的作用。

In eutherian mammals, XCI is thought to be triggered by the expression of the non-coding Xist RNA from the future inactive X chromosome3, 4, 5; Xist RNA in turn is proposed to recruit protein complexes that bring about heterochromatinization of the Xi6, 7. Here we test whether imprinted XCI, which results in preferential inactivation of the paternal X chromosome, occurs in mouse embryos inheriting an Xp lacking Xist.

在最新一项研究中，美国北卡罗琳娜大学研究人员用小鼠胚胎（研究人员用基因工程方法使这些小鼠在其未来失活的X-染色体上含有一个有缺陷的Xist基因）所做的新的研究工作显示，实际情况更为复杂。

L.radiata was evolver than L.sprengeri. The genus which contented the number of chromosomes 16, were later than the anterior genus.

结合C-带和FISH结果，初步推测，在进化过程中，换锦花处于较原始的地位，石蒜次之，含16条染色体物种较进化。

A new Double Layers Chromosome Coding Schema and a new Subtour Exchange Algorithm are proposed for Capacitated Vehicle Routing problem.

4对于带能力约束的车辆路径问题，提出了一种新的双层染色体编码方案和一种子路径交换算法。

The stable expression of exogenous gene in E.coli chromosome had no effect on the bacterial growth and propagation.

外源基因在大肠杆菌染色体上的稳定表达并不影响细菌的生长繁殖。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐