染色体

Results:the preservativecan increase significantly the frequency of micronuclei which were significantly different in comparison with control group;it can not increase significantly the frequencies of chromosomal aber...

结果山梨酸钾可明显引起微核率的上升，与对照组差异显著(P05)或极显著(P01)，不引起染色体畸变率的明显上升。3种物质均可降低山梨酸钾诱发的微核率和染色体畸变率。

Karyotype formula of Gossypium hirsutum L.was 2n=4s=52=30m+20m (4SAT)+2st (2SAT); and its absolute lengths of chromosomes averaged 3.40μm; arm ratio differed from 1.24 to 4.02,with the mean value of 1.77; three pairs of satellite chromosomes; the ratio of the longest to the shortest chromosomes was 2.36; and the karyotype belonged to 2B in Stebbin's classification.

陆地棉的核型公式为2n=4x=52=30m+20sm(4SAT)+2st(2SAT)；染色体绝对长度平均3.40μm；臂比值最大与最小的分别是4.02和1.14，平均1.77；随体3对，分别位于第12、19和26对同源染色体的短臂上；最长与最短染色体的比值为2.36；其核型属于Stebbin的2B类型。

A primary physical map of chromosome 12 in rice was constructed using marker-based chromosome landing and chromosome walking.

应用基于分子标记的染色体着陆及染色体步查等方法构建了12号染色体的初级物理图谱。

The most frequent numerical alterations of chromosome in our study were the gains of an extra copy of chromosome 8, 12,17, X,7,11, and the loss of chromosome 3,Y,13,5,9, and some marker chromosomes which unable to differentiate.

染色体的数目增加依次为8、12、17、X、7和11号；而染色体的丢失依次为3、Y、13、5和9号等；另外还有不明来源的标记染色体。

RDNA was assigned to the telomeric region of Chromosome 15 and Chromosome 19 in dwarf-surf clam , and the same sequence was assigned on the proximal region of long arm of Chromosome 10 and on the telomere of short arm of Chromosome 12 in the hard clam .

18S-28S rDNA在两种蛤中有两个位点。rDNA探针定位在侏儒蛤的第15对和第19对染色体的端粒区域，同一序列定位在硬壳蛤的第10对染色体的长臂和第12对染色体短臂的端粒区域。

The condition of having three copies of a given chromosome in each somatic cell rather than the normal number of two.

亚倍体的有一组染色体，只有几个染色体比正常的二色染色体少

P210bcr/abl plays a central role in the pathophysiology of CML. The purpose of this study was to construct a cell line model that bcr/abl expression can be regulated by Tetoff inducingexpressionsystem. The fulllength b3a2 bcr/abl cDNA was subcloned into the pTRE2hyg expression vector to construct the pT2P210 plasmid.

CML是目前致病分子信号基础研究最为清楚的肿瘤之一，1960年Nowell和Hungerford在CML患者的白血病细胞中发现Ph染色体［1］，1973年Rowley等［2］进一步应用染色体分带技术证明，Ph染色体是由9q34的abl基因和22q11 的 bcr 基因相互易位形成的 bcr/abl 融合基因。

Multiple genetic changes have been found in ESCC,but little is known about major oncogenes and tumor suppressor genes involved in this disease.To surveying chromosome imbalances in this disease,we analyzed statistically high-frequency chromosomal changes of ESCC from the previous studies by multicolour fluorescence in situ hybridization and comparative genomic hybridization.

为鉴定与食管癌关系密切的基因，本研究从染色体畸变的角度出发，在实验室前期工作及相关文献的基础上，统计分析食管癌染色体畸变谱，发现3、5、8号染色体重排及着丝粒断裂再重组可能是最常见的结构改变，3q、8q增益是最常见的数目异常。

The results demonstrated that the dup(p21) and the del(p11) were of paternal origin and i was of maternal origin. The dup(p21) arose from an unequal sister chromatid exchange. The del(p11) occurred through X chromosom e breakage and deletion machanism.

结果表明，dup(p21)和del(p11)起源于父方，而i起源于母方。dup(p21)是由X染色体姊妹染色单体不均等的互换所引起的，del(p 11)是由于X染色体断裂后丢失所致，i的发生是由于卵母细胞X染色体着丝粒错分裂。

One of these "daughter" cells is a new sperm producing cell, whilst the other cell further divides to form two new cells, each with only one member of each chromosome pair. As the unfertilised egg also contains only one member of each chromosome pair, the act of fertilisation re-institutes an embryo with 46 chromosomes.

之一，这些&女儿&细胞是一种新的精子产生细胞，而其他细胞的进一步分裂，形成两个新的细胞，每个只有一个成员，每一个染色体的配对，由於unfertilised鸡蛋也只包含一个成员，每一个染色体的配对，该法的受精重新研究所胚胎与46染色体。

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