查询词典 DNA

The duplex DNA of which any strand contains only one among A, T, G or C has a preference for selecting ODN containing at least a couple of pyrimidines to form antiparallel TBT.

双链DNA中任何一条链只包含A、T、C或G中的一个，这样的DNA偏爱选择含有至少两个嘧啶的ODN形成反平行的TBT。

Different DNA constructs were introduced into the decapsulated cysts of Artemia by electroporation under 2KV, 20 μsec pulse length, 20 number of pulses and a DNA concentration of 20μg/μl in a volume of 100μl.

不同的构筑质体经由电穿孔法，被导入经去壳处理后的丰年虾休眠卵中，在2千伏特、20微秒的脉冲波长度、20次的脉冲数和在100微升的体积中DNA浓度为每微升20微克的设定条件下。

The distributions of the chain radius of gyration and the two-dimensional asphericity are measured. It is found that the DNA molecules exhibit highly anisotropic shape even for circular-form and the mean asphericity is chain length independence.

从测量二维的鍊回旋半径分布发现DNA分子展现高度的非等向性的形状(甚至是环形的DNA也具备此特性)且此特性与鍊长无关。

Unicolor in autogamy shows different the seed-setting percentage in different pollinating methods, with the result as the higher rate of self-fruitfulness through xenogamy. Based on hybridization, genetransferring through pollen-tube pathway to Lilium davidii van Unicolor is researched. The master of basic technique of exogenous DNA transferring to Lilium davidii var.

在进行了有性杂交的基础上，选取具有较高结实率的兰州百合作为受体，利用花粉管通道导入法，对一些百合品种的总DNA在在兰州百合中进行了初步研究，基本掌握了在兰州百合中进行外源DNA导入的基本操作方法，提供了一组以结实率和有胚种子率为标准的优化参数。

The genome DNA was extracted from the red blood cells or blood of the infected sheep and goats which include as isolates of ovine Babesia from these different geographic areas. The gene specific primers were devised according to the pubulished 18srRNA sequence at GenBank. The target DNA segment was amplified by polymerase chain reaction, the PCR product was ligated into PGEM-Teasy vector.

用分离于四个地区的羊的巴贝斯虫感染实验动物，自感染羊的红细胞或全血中提取基因组DNA，根据GenBank中已发表的巴贝斯虫18S rRNA序列设计两对羊巴贝斯虫特异性引物，通过PCR扩增目的基因片段，将扩增产物连接到PGEM-Teasy载体中，经酶切鉴定，PCR分析，进行序列测定，结果显示羊巴贝斯虫四个分离株的18S rRNA基因大小为1800bp左右。

In this research DNA Barcodes was based on the special section of the cytochrome c oxidase 1sequence. Three primers were designed in three special sections(Bar1 Bar2) to identify six indigenous chicken breeds. The Bar1 sequence of COⅠ(648 bp : from 712 sites to 1358 sites) was the highest in polymorphism and had 24 SNP in six chicken breeds.

本研究利用线粒体细胞色素C氧化酶I (cytochrome c oxidase ⅠCOⅠ)这一特定基因的特定区段来做DNA条形编码的基础，选择其中二段序列（Bar1 Bar2）设计2个引物对6个中国地方鸡种的线粒体DNA进行扩增，以对其进行种品鉴定。

A biochemist measured the amount of DNA in cells growing in the laboratory and found that the quantity of DNA in a cell doubled b.

细胞生长时DNA的质跟量加倍是在细胞循环中的G1和G2测量的4。

Primers used in PCR were designed based on the sequence of mitochondrial 16S rDNA (AJ250642 and AF312718) and beta-actin (AY910691) of Eriocheir sinensis which had been deposited in GenBank. PCR analysis using total DNA from muscle, branchia, testis and sperm indicated that 16S rDNA exhibited different expression in the four samples. Beta-actin gene was detected plentiful in all the four tissues/cells and exhibited the same expression pattern. 16S rDNA gene amplification was detected at high levels in muscle and branchia, appreciable low in testis and very low in sperm. The PCR products of 16S rDNA gene were sequenced and aligned with the sequence of 16S rDNA from GenBank (AJ250642 and AF3 12718), and the alignment result showed there was no difference between them.

通过GenBank中的中华绒鳌蟹线粒体16S rDNA序列设计引物，利用PCR扩增方法，以beta-actin做内参，检测了中华绒螯蟹肌肉、鳃、精巢和精子中线粒体16S rDNA扩增情况，发现各组织或细胞beta-actin扩增片段大小、条带宽度和亮度基本一致，表明各模板DNA量基本一致；而在同一DNA浓度下，16S rDNA的扩增片段长度虽一致，但其产物量存在明显差异，精子16s rDNA产物量显著低于其他3种组织，其条带宽度和亮度很弱；16S rDNA扩增产物经测序分析及比对证明与已有序列完全吻合。

In order to find the reason of population decline and assist conservation, the genetic diversity of great bustard was analyzed by microsatellite DNA and mtDNA control region markers. In study using microsatellite DNA markers, Three microsatellites from great bustard O.

为了解东方亚种濒危的现状并为制定科学、有效的保护措施提供科学依据，本研究利用核微卫星DNA和mtDNA控制区序列，从父系和母系两方面对大鸨东方亚种的遗传多样性进行了研究。

Kary Mullis of Human Heredity Department, the Cetus Company set up this technology by using Klenow DNA polymerase .

聚合酶链式反应是一种模拟DNA 聚合酶在体内的催化作用，在体外快速扩增特定DNA片段的技术，是现代分子生物学最重要的手段之一。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。