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- chromosomal operon 染色体操纵子
- A chromosomal segment of DNA that regulates the activity of the structural genes of an operon by interacting with a specific repressor. DNA中的染色体元素DNA中的染色体,它是通过与一特殊的约束因子相互作用而控制遗传子结构基因的行为
- Objective To clone and express the Trp operon gene of E. 目的克隆并表达大肠杆菌色氨酸操纵子基因,提高其酶活性。
- Like mRNA, both tRNA and rRNA are transcripts of chromosomal DNA. tRNA及rRNA同mrna一样,都是染色体DNA的转录产物。
- Aberrance of the Chromosomal in 20 patients(3.7% in 545 patients). 染色体变异共20例;占3.;7%25。
- All of 17 cases detected by CGH showed chromosomal aberrations. CGH技术检测的17例肺癌标本中均检出染色体畸变(扩增和/或缺失),而且每个病例涉及多条染色体畸变。
- The physician should also order chromosomal and hormonal studies. 还应该进行染色体和激素水平的检查。
- When the second operon with OC mutation, it will continue to express. 当第二个操纵子带有OC突变时,它将持续表达。
- Chromosomal Structural Variation in Long-term Cultures Triticum aestivum L. 长期继代小麦培养细胞的染色体结构变异特征。
- Chromosomal arms 5AL, 4BL, 6BS, 7BL and 7DL carry genes for LSS character. (2 )控制并列小穗的基因定位在 5AL、4BL、6BS、7BL、7DL染色体臂上 ;
- Low level of PAPP-A was also associated with fetal chromosomal an... 结论:母体血清PAPP-A浓度可用来筛查胎儿染色体异常。
- Objective To study the genetic effect of balanced chromosomal translocation. 摘要目的研究染色体平衡易位的遗传效应。
- The stomatal size was positively related with the chromosomal ploidy. 气孔大小与染色体的倍性有一定的正相关关系。
- In this paper,the Monod lactose operon modelis described as a computer program by BASIC language. 本文用BASIC语言设计Monod操纵子数学模型的电子计算机程序。
- Telomeres are a special structure of chromosomal ends of somatic cells. 端粒是真核细胞染色体末端的特殊结构。
- The lac operon is an inducible operon, whereas the trp operon is a repressible operon. 乳糖操纵元是可诱导的操纵元;色氨酸操纵元是可阻遏的操纵元。
- Chromosomal translocation is a kind of common chromosomal abnormality. 染色体易位是常见的染色体结构异常。
- Glucose blocks induction of the lac operon by utilizing a positive control mechanism. 葡萄糖通过正调控机制阻止乳糖操纵元的诱导。
- This P element then transposes from the plasmid to a random chromosomal site. 携带目的基因的P因子可从质粒转座到任意染色体上。
- Using a modified random arbitrarily primed PCR approach, the operon encoding the Enterococcus faecal ... 用改进的随机随机引物PCR的方法,操纵子编码的肠球菌粪便 ...