染色体基因

Trisomic triallelic pattem is a"Gold standard"for diagnosis of DS and trisomic diallelic pattern with a ratio of 2: l also is a powerful indicator for DS.

故在21号染色体上DS关键区内选择10个STR位点（D21S11、D21S1432、D21S1413、D21S1414、D21S1446、D21S1437、D21S2039、D21S1270、D21S1411、D21S1412），根据STR基因型的表现，可进行DS的基因诊断。

However, it is located on the X chromosome and a single mutation can effectively stop it from working.

而且，这段基因位于X染色体一个突变就会让这个基因失效。

That's because the male Y chromosome (3)a so-called sex determination gene called SRY.

这是因为男性Y染色体自身携带了决定雄性性别的基因片段——SRY基因。

That's because the male Y chromosome comes equipped with a so-called sex determination gene called SRY.

这是因为男性Y染色体自身携带了决定雄性性别的基因片段——SRY基因。

It was identified that the nif gene for aerogenic P. agglomerans strain waslocated on plasmid while for anaerogenic strains were located on chromosomes usingKlebsiella pneumoniae nifHDK as probe.

用nifHDK为探针进行Southern杂交证明固氮成团泛菌产气型的菌株固氮基因定位在质粒上，而不产气型菌株固氮基因定位在染色体上。

The QTL controlling spikelet fertility and pollen fertility were investigated based on the Balilla/NTH//Balilla backcross population by SSR marker. For spikelet fertility trait, two QTLs, qSPTF1 on chromosome 1 and qSPTF6 on chromosome 6, were detected, and their additive effect were 13. 501 and -16. 414, respectively. According to previous studies, qSPTF6 was deduced to be same as S〓.

以回交群体 Balilla/南特号//Balilla 为育性基因的分析群体，研究了该群体中控制小穗育性和花粉育性的基因位点，对于小穗育性共检测到2个QTLs，qSPTFl和qSPTF6，分别位于第1和第6染色体上，其加性效应分别为13.501和-16.414。

Bi-allelic or biparental expression of alleles may be present in some tissues and uniparental expression in other tissues.

某些组织中可能出现等位基因的双等位基因或双亲表达，其他组织中是单亲表达。angelman综合征和prader-willi综合征都可因第15号染色体缺失而产生。

Study on glutenin subunits,GMP content and their relationships with(T.aestivum L.)With the analysis of high and low glutenin subunits of common wheat(Triticum aestivum L.)in China,the correlations between glutenin compositions,glutenin macropolymercontentand breadmaking quality were studied.Also a rapid and efficient detection method of geneticpolymorphism at Glu-D1y loci in wheat was established using polymerase chain reaction.

分析了100份小麦农家品种和241份育成品种的高、低分子量谷蛋白亚基的组成以及有关的品质性状，研究了高分子量谷蛋白亚基频率的变化，用单向一步SDS-PAGE的方法分离LMW-GS，并对我国小麦品种进行初步分类；在亚基水平上研究了不同的亚基或亚基组合对品质性状的影响；在聚合体水平上研究了谷蛋白大聚合体的含量与其他烘烤品质性状的相关性及其在面包体积预测中所起的作用；在基因水平上利用PCR技术研究了1D染色体上控制y-型谷蛋白亚基的Glu-Dly位点基因的多态性。

By using wheat with recessive ph gene as parents in wide crosses, new wheat lines with alien chromosome segments, such as TKL1, were obtained. Gene phKL and its combinant have new usefulness for studying on genetic mechanism of homoeologous chromosome pairing and alien gene transfer.

phKL基因及其重组体在染色体配对的遗传作用机制和外源基因转移方面存在新的应用价值。

Firstly, the recombinant engineering technology related vaccine preparation was set up, including: 1. the gene knock-out based on linear DNA target molecular in vivo; 2. the selection and counterselection technology of exogenous gene knock in definite site on chromosome; 3. the Gap-repair clone technology in vivo; 4. the recombination technology of single-chain DNA and the overlapping primer; 5. Set up the new selection and counterselection technology of neo-E.

本研究首先建立与疫苗制备相关的重组工程技术包括：①基于线型DNA打靶分子的大肠杆菌体内基因剔除技术，②选择与反选择外源基因定位敲入染色体上特定位点技术，③Gap-repair体内克隆技术，④单链DNA重组技术和重叠引物介导的DNA重组技术，⑤建立&抗生素-酶切位点&选择反选择技术新技术。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！