exogenous dna造句

• Distribution of exogenous dna in upland cotton by pollen tube pathway
  在棉花胚珠内的分布
• Study on hydroxybenzene substance from exogenous dna transformation via ar ion beam
  转化彩棉中酚类物质的研究
• Advances of exogenous dna injection to plant and its applications in crop breeding
  导入植物技术的发展及其在作物育种中的应用
• To some degree , the inheritance and segregation of variant traits had a link with genetic relation between exogenous dna donor and receipt
  转化当代和后代产生了许多变异个体，变异性状的遗传与转化当代外源dna供体的亲缘关系有一定的相关性。
• It is possible that exogenous dna fragment integerated into acceptor genome , changing gene base sequence or base deletion or base insertion , inducing to mutant at gene level
  这可能是外源dna片段整合进受体的基因组中，改变基因的顺序或者引起基因碱基的缺失、插入，从而在基因水平上发生突变。
• The results of seed gliadin electrophoresis showed that there were difference in zymotype between lu22 and t220x , which verified that the injection of exogenous dna influenced the component of gliadin
  种子醇溶蛋白电泳结果显示，变异体t220x酶带与受体鲁麦22号相比，既有新的酶带增加，也有酶带缺失的情况。
• It was suggested that exogenous dna fragments ( mainly non - coding sequence ) had new mutagenetic mechanism as well as insertional mutagenesis . in t1 and t2 , a number of mutants were obtained
  对这种现象的分析表明，外源全dna片段(主要是非编码序列)对转化受体除了插入诱变的作用外，还可能存在一种新的诱变机制。
• These results indicated that it is practicable inducing exogenous dna into wheat through pollen tube pathway to obtain taget plant . there are great potential power to improve wheat quality by this way
  本实验结果表明：利用花粉管通道法将外源dna导入小麦中获得目的性状的植株，从而改良小麦品质，在实践上是可行的，在生产中具有极大的潜力。
• It has also been demonstrated that sos response dependent accumulation of mutation during replication of dna that has not been attacked by exogenous dna damaging factors can be seen in challenged cells , termed as sos untargeted mutation
  而在出现sos反应的细胞中还观察到了在复制过程中的产生的、发生在没有外源损伤dna上的突变事件，被称为sos非定标性突变。
• Finally , the variant line tc243 - 2 , was analyzed by rapd - pcr amplification with 100 random primers . the results suggested that phenotypic variation came from exogenous dna transformation rather than exogenous pollen contamination . a mutation corre
  用100条随机引物对tc243一株系的rapd一pcr扩增结果表明该株系的变异不是来自外源花粉的污染，同时发现了特异条带5270 _ 1600对应的变异在tz一ts代能连续稳定遗传。
• These studies demonstrates that not only we could make transgenic mouse embryo with high efficiency by the method of icsi , but also the fresh sperm from cauda epididymis or freeze - thawed dead sperm pre - mixed with exogenous dna had the full development potential to develop into term
  本实验充分表明， icsi精子载体法可以比较高地制造小鼠转基因胚胎，小鼠附睾新鲜精子及无抗冻剂保护冷冻致死精子都具有足够的全程发育潜力。
• First , the fact that the phenotypic variation in t1 mainly resulted from transformation of exogenous dna rather than ion beam mutagenesis was verified by rapd - pcr amplification to mutants , exogenous dna - transferred plants and ion beam - implanted plants . second , an absent band , marked by sieg - isso , was found in the rapd - pct amplification to t - 6 and its progenies , which meant that the corresponding mutation was hereditary . this mutation was located between exon 1791 - 2691 and exonl - 395 of abc - transporter gene
  T - 6和其t2代植株的rapd - pcr扩增结果中均存在缺失条带s _ ( 168 - 1850 , )表明该缺失条带对应的变异是可以遗传的，该变异发生在abc郑州大学博士论文摘要介即sporter基因exon1791一2691和exonl一395之间。
• Sequence alignment and southern blot showed that this band was not the sequence of a . thaliana genome , but from exogenous dna donor cabbage genome . it could be served as direct molecular evidence that the exogenous dna could be transferred into receipt mediated by ion beam . further analysis showed that this exogenous dna fragment had changed in structure during the transformation
  ，该条带的dna序列和拟南芥菜基因组序列库的比对结果表明，该条带不是拟南芥菜基因组本身的dna序列， southem杂交结果表明该条带来自转化供体甘蓝基因组，找到了外源全dna转化受体的分子证据，进一步分析表明该外源片段在转化过程中发生了结构变化和修饰。
• Different amount of copies in different tissues attribute to the different density of positive signals . the result of the experiment suggested that the transgenic animals can be produced by spermatozoa - mediated gene transfer after the entrapment of liposome . and because the exogenous dna occurs losing the segments . partly integration , or existin g outside of genome dna , the rate of chimerism is relatively high
  结果表明： ( 1 )脂质体包裹外源基因转染精子的方法，可将外源基因导入受精卵中，能够获得转基因动物，并得到了较高的转基因阳性率； ( 2 )精子携带的外源dna的整合过程是随机的，在受精过程和胚胎早期分化过程中可能发生了片段丢失、不完全整合或游离于基因组存在而产生嵌合体。