spontaneous mutation

An anti-bacteriophage engineering Escherichia coli was directly selected from the ferment lysate by spontaneous mutation.

应用自发突变的原理成功地从溶菌液中筛选到抗噬菌体的工程 菌株;在发酵罐中培养,该菌株生长行为和表达水平没有变化。

In order to gain brewer s yeast strains of low diacetyl yield,sulfometuron methyl(SM)-resistant spontaneous mutants were isolated from brewer s yeast strains kept in our laboratory.

为了获得低产双乙酰的菌株,从保藏的啤酒工业酵母菌种中分离甲磺隆(SM)抗性自发突变株,经低温发酵测定发酵液的发酵度和双乙酰等啤酒风味物质的含量,结果得到ZT21-9-2等5株优良的SM抗性株。

Spontaneous and induced mutation occur with animals viruses.

动物病毒的突变有自发突变和诱发突变。

Making full use of mutant mice as research models requires correct characterization of the phenotypes that result from induced or spontaneous genetic mutations.

要充分利用突变小鼠作为研究模式，则需要诱发突变或自发基因突变之正确基因表现型特徵。

The Research of Independent Technological Innovation Strategy for Big Countries under Technology Mutation

技术突变下后发大国自主技术创新战略研究

Changes of spontaneous EPSCs in visual cortex neurons of rat during development period

发育期大鼠视皮层锥体神经元自发兴奋性突触后电流变化

Independent Innovation Environment of Enterprises in Underdeveloped Countries under Technology Break though and Its Optimization;

技术突变下后发国家的企业自主创新环境及其优化

Mutation Study of Predisposing Genes for Chinese Women with Idiopathic Premature Ovarian Failure

中国汉族自发性卵巢早衰患者易感基因的突变研究

A sudden, shocking surprise or turn of events.

晴天霹雳事件的突发或突然转变

STUDY ON THE EARLY AND LATE MUTANTS OF RADIATION INDUCED RICE

辐射诱发籼稻早熟突变和双向突变的研究

Natural properties of mutation, growth, and symmetry are drawn parallel to global social issues of cultural hybridization and development.

把自然性的基因突变，发展和保持平衡与文化杂交和发展的全球性社会问题作一个比较。

Not developing these skills allows you to generalize or go off on a tangent, losing the point you are trying to make.

不发展这些技巧会使你允许自己去概括或思想行动发生突然的改变，失去目标。

"The mutation was corrected," said Alexeev.

"突变被纠正了，毛发就变黑了。

Catastrophe and gradual changing are all consist in sports teaching system, gradual changing conduces catastrophe and catastrophe conduces creativity in sports teaching system.

渐变与突变共生于体育教学之中,渐变导致突变的发生,而突变则更有利于创造性的实现。

She felt her body chill suddenly.

她感到自己的身体突然变冷了。

Analysis on Mutation Type of See2b Gene in Elite Inbred Lines of Maize

玉米骨干自交系See2b基因突变类型分析

Mutation of human CD59 accelerates occurrence of human diabetic vascular proliferative complications

人CD59突变促进糖尿病血管并发症发生

Primary Establishment of the Spontaneous Mutant Gene Isolation System and Identification of the Mutant Type of the Columnar Apple (Malus Pumila);

自然突变基因分离体系的初步建立与苹果柱型突变体类型的鉴定

Model on Sudden Credit Risk in Supply Chain Based on Catastrophe Theory

基于突变理论的供应链突发信用风险模型

The Expression of CD16 and Mutation of Structual Gene on Macrophage in Spontaneous Rupture of Hepatocellualr Carcinoma

肝癌自发性破裂中巨噬细胞表面受体CD16的表达及其结构基因突变的检测