查询词典 sequences

It is expected that hyg would be integrated stablely into the chromosome along with insert while spc/str would be lost during the second cross-over. Gene replacement through these two flanking sequences will result in the susceptibility of the transformants to phage φHAU3, which provides an enrichment for desired transformants by counterselection.

预期在携带有大插入片段的基因置换YAC分子进入野生型变铅青链霉菌后，YAC分子将通过1.4kb或1.0kb片段与染色体发生同源单交换，继而发生同源双交换，hyg连同大插入片段一起稳定地整合到染色体上，而spc／str丢失，从而导致菌株Hyg〓Str〓的表型。

This phenomenon warrants further study. 4. Phylogeny study on Croomia and Stemona The relationship of the genus and the taxonomic placement of Stemonaceae The phylogenetic tree of matK, trnL-F, atpB-rbcL and ITS sequences data indicated that it was natural to place Stemona and Croomia in one family.

黄精叶钩吻属和百部属的分子系统学研究百部科属间关系和科的系统地位叶绿体DNA(matK、trnL-F和atpB-rbcL)及核DNA序列构建的系统树显示Stemona和Croomia形成稳定的单系类群，表明将这两个属放在同一个科是自然的，不支持将Croomia独立成科。

Not only should cryptographically strong sequences have a large linear complexity, but also the change of a few terms should not cause a significant decrease in linear complexity.

密码学意义上强的序列不仅应该具有足够高的线性复杂度，而且当少量比特发生变化时不会引起线性复杂度的急剧下降，即具有足够高的k-错线性复杂度。

It is ideal for detecting changes to short sequences of bytes; however, because there are only 232 possible checksum values, and because it is not cryptographically secure, the likelihood of a collision is high, giving the attacker a realistic chance to replace code without changing the checksum.

用它检测字节短序列比较理想；但由于只有2的32次方个可能的校验和值，而且不具密码安全性--碰撞可能性高，所以给了入侵者一个可实现的机会，不改变校验和而替换代码。

The induced amino acid sequence identity with other cucurbitaceous ribosome-inactivating proteins was up to 68.90%, with TCS was 71.25%, with Gelonin was 71.25%, with Saporin was 66.45%. The amino acid sequences of 90 to 220 were conservative.

BC-MAP30和YT-MAP30基因的推导氨基酸序列与其他葫芦科植物的Ⅰ型核糖体失活蛋白以及天花粉毒蛋白、多花白树毒蛋白、肥皂草毒素蛋白的氨基酸序列同源性分别为68.90％、82.75％、71.25％和66.45％，且其第90～220位氨基酸序列较为保守。

Two kinds of generalized cyclotomic sequences of order four are introduced.

构造了两类阶数为4 的W-广义割圆序列并研究了它们的自相关性质和线性复杂度。

The fragments of mtDNA COI gene were sequenced for 11 species from 3 subfamilies of Cypraeidae, and the homologous sequences of another 17 species of Cypraeidae were downloaded from GenBank.

首先，本研究对腹足纲部分类群的分子系统学研究进展及宝贝科动物系统进化研究中存在的若干问题进行了较为系统的评述。

The mitochondrial COⅠ gene sequences of 28 species of Cypraeidae including those of 11 species newly determined were used to reconstruct their phylogenetic trees using the neighbor-joining,maximum parsimony and Bayesian methods,aiming to clarify their phylogenetic relationships.

新测了分布于我国海南沿海的11种宝贝科软体动物的线粒体COⅠ基因序列，结合GenBank中17种该科动物的同源性序列片段，基于不同的数学模型，以邻接法、最大简约法和贝叶斯法构建了宝贝科分子系统树。

To study the phylogenetic relationships of Labeoninae fishes in Cyprinidae, the Phylogenetic Tree was reconstructed based on sequences of mitochondrial 16S rRNA.

为研究其在鲤科鱼类中的系统发育关系，以16S rRNA基因作为遗传标记进行鲤科鱼类的系统发育分析。

Long-distance PCR was used to amplify the β-actin gene for black carp based on the β-actin gene sequences of Cyprinidae. Construct of EGFP expression system containing 5'UTR of β-actin gene for black carp was transferred into zygotes of mud loach and COS-7 cells and the results showed that 5'UTR of β-actin gene for black carp could be used as the promoter of the"all-fish"transgene.

基于鲤科鱼类Beta-肌动蛋白基因序列，采用长片段PCR技术，克隆了青鱼β-actin基因DNA片段，并构建了青鱼β-actin基因5'启动调控区绿色荧光蛋白表达载体，通过显微注射泥鳅胚胎和COS-7细胞转染实验，证明了所克隆的青鱼β-actin基因5'启动调控区具有启动调控功能，并用之来构建&全鱼&基因的启动子部分。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。