查询词典 timing sequence

They are often morphologically distinct from A chromosomes, being smallerand more highly heterochromatic in most cases. B chromosomes do not pair with Achromosomes, and they are inherited in a non-Mendelian way, exhibiting meiotic andmitotic instability and nondisjunction. However, B chromosome DNA is quiteidentical to the corresponding sequence on the A chromosome complement. So far afew B chromosome specific DNA sequence have been identified. Specific DNAsequences on B chromosome have been the attractive research area on Bchromosomes.

现已在千余种植物和近三百种动物中被发现。B染色体与物种中正常染色体不同：独立于整倍体基因组之外，减数分裂时不与A染色体发生联会和配对，细胞分裂后期不分离，非孟德尔遗传，富含异染色质，不含对宿主主要性状有影响的基因等。B染色体DNA的分子组成既与A染色体极为相似，具有A染色体DNA分子组成的一般特征：富含重复序列和转座成分，染色体三大功能组件DNA高度同源；又与之相区别，含有B染色体特异的DNA序列，这些DNA序列可以为探讨B染色体的起源和进化提供有价值的信息。

A discrete weighted Hardy inequality is studied, and by proving a refinement lemma, the characterization of the weight sequence ｛ω_｝_(n≥1) in order that the weighted l~-Hardy inequality holds for all nonnegative and nonincreasing sequence c_ is given.

本文研究离散的加权Hardy不等式，通过建立权序列的加细引理，给出了对任何非负非增数列 lp-加权Hardy不等式成立时权序列{ωn}n≥1的特征刻划。

Results Of the 52 cases lymphoma studied, HHV-6 DNA sequence was detected in 21 cases ; of 43 normal PBL, HHV-6 DNA sequence was detected in 8 cases.

结果 52例淋巴瘤组织中，21例PCR扩增出HHV-6特异DNA序列，阳性率40.4％；43例献血员外周血淋巴细胞中，8例检测出HHV-6DNA序列，阳性率18.6％。

Using the lifting property of sequence entropy pair and sequence entropy pair for a measure, it is shown that for each system there are a maximal null factor system and a maximal M-null factor system.

使用拓扑序列熵对和测度序列熵对的提升性质，我们说明了每个动力系统存在最大的null因子系统和最大的M-null因子系统。

Each node in the former order, in sequence, after the sequence number of the visit.

每个节点在前序、中序、后序中的访问的序号。

Each user that references a sequence has access to the current sequence number.

当用户直接引用一个序列对象时，使用的是此序列当前的序列号。

When a new gene is identified and its DNA sequence deciphered, it is still unclear what its corre onding protein sequence is.

当一个新基因被识别，其DNA序列被解读，人们仍旧无法搞清相应的蛋白序列是什麽。

Microsatellites or simple sequence repeats which are simple,tandemly repeated one to six nucleotide sequence motifs are ubiquitous in eukaryotic genomes.

微卫星DNA是一种由1～6个核苷酸为单位多次串联重复的长达几十甚至几百个核苷酸的序列，广泛分布在真核细胞的基因组。

It was named DDx24.The sequence of 0876g05 is 100% homologous to one segment sequence of humanchromosome X.Both genes have been registered in GenBank.

可以确定此基因为人类新基因，并经国际基因命名委员会命名为人DDx24基因；基因0876g05核苷酸序列与人类X染色体上一段序列100%同源，未发现同源性大于80%的已知人类基因，同样确定此基因为人类新基因，将该基因定位于人类X染色体Xq2

With eggs and children artemia were detedcted using nested-PCR. WSSV positive products could be detected in artemia, and DNA sequence of the product accords with the designed specific amplified one according to sequence analysis. The positive rates of wild brine shrimp and filial generation were 58% and 43%, respectively. However, it seems to be no regularity between parents and filial generations positive results. It may not judge whether WSSV could vertically transmit in artemia or not.

检测结果显示：卤虫中可扩增出特异性的、与引物设计吻合的DNA片段；DNA测序分析表明，扩增片段的DNA序列与白斑综合症病毒序列一致；野生卤虫携带白斑综合症病毒的阳性率为58％，实验条件下野生卤虫的后代的阳性率为43％；同一卤虫家系中，亲代与子代携带病毒的情况不完全一致，不能确定白斑综合症病毒可否通过繁殖在卤虫世代间进行垂直传播。

I hope that this success is just the first in a long series.

我希望这只是成功的开始。

Three dimensional stresses on the interface of tire and soil, tire deflection and soil sinkage are measured.

测试轮胎——沙土界面上的三向应力、轮胎变形和沙土沉陷；建立考虑剪切应力对沙土承载特性产生影响的车轮牵引性能预测模型；分析车轮作用下土壤的纵向稳定性。