查询词典 genetic

By analyzing the DNA of excellent soybean strains and their parents,it is made clear that backcross should be carried out in early generation so as to retain more genetic basis of wild soybean.

通过对大豆优良品系及其亲本的DNA组成分析，明确了用栽培大豆与种间杂交后代回交应在早代进行，以便更多地保留野生大豆细胞核的遗传基础。

Data on mutant strains includes detailed information on affected gene, mutant allele and genetic background (DNA origin, gene targeted, host and backcross strain background).

突变系的数据包括对影响的基因、突变等位基因和遗传背景(DNA起源，基因靶向，宿主和回交系背景)的详细的信息。

Its alterations of phenotype and structure have been further studied at whole, organic and cellular levels. By means of backcross between wildtype and the mutant, its genetic background has been analyzed.

本文在整体水平、组织水平和细胞水平上深入研究了该突变体的表型和结构的变化、通过突变体与野生型之间的杂交对其遗传背景进行了分析，并运用分子生物学手段对突变体相关基因进行了克隆和定位，初步探讨了该基因的表达模式和功能。

Three promisingmale sterile individualswere selected using the marker information, which had both less genetic drag and carry-over for further backcross.

通过分析选择了其中3个单株为理想的雄性不育株，可用于进一步回交。

The invention relates to construction and application of recombinant porcine parvovirus VP2 nucleocapsids which express foreign genes, belonging to the genetic engineering bacterin field.

本发明涉及表达外源基因的重组猪细小病毒VP2病毒样粒子的构建及应用，属于基因工程疫苗领域。

With the development of molecular biology, an efficient bacteriophage λ based Escherichia coli homologous recombination system has been developed for genetic engineering.

伴随着分子生物学的发展，一种基于λ噬菌体Red重组酶的同源重组系统已应用于大肠杆菌基因工程研究。

The core of a Bacteriophage's genetic material may be either DNA or RNA.

噬菌体的核心基因物质可能是核糖核酸或去氧核糖核酸。

Genetics A bacteriophage, a plasmid, or another agent that transfers genetic material from one location to another.

遗传媒介：把遗传物质从一个地方转到另一地方的噬菌体、质体或其它介体

To better understand the roles of LsrA protein in nodulation, a series of analyses of nodules using scanning electron microscopy, genetic and biochemical approaches have been carried out. Our analyses suggest that the lsrA1 nodules contain bacteroids in the invasion and establishing zone only. The lsrA gene expression is active early in the invasion zone and activated later than bacA genes. The lost of LsrA protein dramatically reduced the expression of nifA and fixK, and completely blocked the expression of the nifH gene for nitrogenase. LsrA protein functions early in the bacteroid development and it is essential for the development nitrogen fixing bacteroids.

前期的工作中，苜蓿中华根瘤菌Rm1021中90个候选LysR基因已经被定向插入突变，并筛选在自生生长时期、共生生长时期的表型，以期寻找更多在自生状态或共生固氮中有功能的LysR转录因子。1 针对前期鉴定出的共生固氮必需的lsrA基因，我们应用了一系列扫描电子显微镜技术、生物化学、分子遗传学等方法，发现lsrA基因主要在根瘤侵染区开始表达，表达时序也在侵染阶段左右，但晚于bacA基因表达；LsrA蛋白缺失后根瘤固氮区中缺乏具有固氮能力的类菌体，nifA和fixK基因的转录水平降低，nifH基因的转录被完全阻断，因此LsrA蛋白为根瘤发育所必需，是新的根瘤发育信号传导途径成员。2 通过表型筛选我们鉴定了苜蓿中华根瘤菌的oxyR基因，并研究了它的调节特性。oxyR突变后，苜蓿中华根瘤菌对过氧化氢敏感性提高，适应性降低。

Nine super sweet corn inbred lines with abroad germplasm T1, T2, T3, M1, M2, M3, R1, R2, R3 were selected as tested lines, and original inbred lines B, C, D, 6, D2 as testing ones in this examination. 45 crosses were made by means of incomplete diallel method, and the genetic parameters of the groups and the combing ability of 10 traits, growth period, plant height, ear height, ear length, ear diameter, core diameter, baldhead length, rows per ear, kernels per row, single ear weight were tested and analyzed by means of NCⅡ design.

选用具有国外血缘的T1、T2、T3、M1、M2、M3、R1、R2和R3共9个超甜玉米自交系做被测系，以原有5个自交系B、C、D、6和D2做测验系，采用不完全双列杂交法组配出F1杂交组合45个，对生育期、株高、穗位高、穗长、穗粗、芯粗、秃尖长、穗行数、行粒数、单穗重10个性状按NCⅡ设计的原理和方法进行配合力测定与分析，并估算群体遗传参数。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。