细菌基因中无内含子。
在内含子16内有1个位点存在转换型杂合子。
内含子与外显子的存在，能够使基因更加模块化。
The presence of introns, and thus exons, in effect made genes modular.
内含子的AT含量达到61%且含有较多的重复序列。
对18个猛禽chd基因的一段内含子序列进行比较和分析。
In this study, CHD gene intron sequences of 18 species of predatory birds were compared and analyzed.
核内的加工酶切下内含子，同时外显子(编码序列)连接在一起。
The introns are cut out by processing enzymes in the nucleus and the exons (coding sequences) ligated together.
内 的加工酶切下内含子，同时外显子（编码序列）连接在一起。
The introns are cut out by processing enzymes in the nucleus and the exons(coding sequences)ligated together.
非编码序列，特别是内含子的起源，是一个重要的悬而未决的问题。
The origin of non-coding sequences, especially introns, is an outstanding issue that has been receiving continuous debate for the last two decades.
信使RNA中没有内含子，它们在转录后加工的过程中被切除了。
Messenger RNA (mRNA) does not contain introns, these being removed during the transcription process.
对12个隼形目物种CHD基因的一段内含子序列进行比较和分析。
In this study, CHD gene intron sequences of 12 species of Falconiformes were compared and analyzed.
认为内含子是真核生物在与原核生物进化谱系分开以后才开始有的理论。
Theory that introns were introduced into eukaryotes after the lineage separated from prokaryotes.
这样获得的DNA与原始的dna序列的不同在于缺少内含子和启动序列。
It differs from the original DNA sequence in that it lacks intron and promoter sequences.
真核基因剪接位点是真核细胞生物基因序列中外显子和内含子的相邻区域。
The splice sites of the eukaryotic DNA are the region of the vicinity in the exons and introns of the DNA sequences of the eukaryotic cell biology.
青蒿鲨烯合酶基因组dna结构很复杂，包括14个外显子和13个内含子。
The AaSQS genomic DNA has a complex organization containing 14 exons and 13 introns.
该结果合理地解释了内含子在脊椎动物，线虫及昆虫中数量的分布呈下降趋势。
The results felicitously explain that the number of introns distributed in vertebrates, Diptera and nematodes are declining sequentially.
我们还发现，曾经含有但数百万年前已丢失内含子的基因的进化率也是很快的。
We also found that genes that hae lost their introns many millions of years ago eole especially fast near where the introns once resided.
文章介绍了该内含子的分布，结构特征及剪接机理，并与主内含子作了相应比。
The distribution, structural features and splicing mechanism of at AC introns are discussed and compared with major class of introns.
初步的统计结果表明：基因组大小跟内含子总大小、内含子密度成正比的关系。
Initial analysis indicates that genome size and intron density is positively correlated to total intron size.
介绍了蛋白质内含子的结构、功能和其介导的蛋白质剪接机理及应用研究进展。
Some recent advance in the study of the structure and function of the intein as well as the mechanism of intein-mediated protein splicing and its application are described in this review.
认为内含子在早期生命形式中即存在并被真核生物保留而被原核生物丢失的理论。
Theory that introns were present in early life forms and were retained by eukaryotes, but lost by prokaryotes.
型内含子的序列差异很大，但是它们都具有保守的碱基配对区，即保守的二级结构。
Although having great variance in sequence, group I introns share a number of conserved base-paired regions, which take part in the formation of the catalytic structure.
内含子突变可以通过引起剪接异常或关键性DNA -蛋白反应中断而影响基因调控。
Intronic mutations may affect gene regulation through aberrant splicing or disruption of critical DNA protein interactions.
结果通过对内含子13和内含子22的两个STR位点的检测，两个家系均检出携带者。
Results The carriers of two families were detected by STR within intron 13 and 22.
这7个基因在基因簇中串联排列 ，每个基因都由6个外显子和5个内含子组成。
The 7 DFR-like genes were found to be arranged in a tandem array, and all of them comprised 6 exons and 5 introns.
我们使用一个已知导致剪切缺陷的83个内含子和35个外显子的突变来评估hsf的效率。
We evaluated HSF efficiency using a set of 83 intronic and 35 exonic mutations known to result in splicing defects.
目的扩增常见动物TP53内含子8片段，确定其在法医学生物检材种属鉴定中的应用价值。
Objective To identify the species of biological samples by amplifying intron 8 of the TP53gene.
古老线粒体上的寄生基因便开始疯狂进行自我复制，最终导致基因组上有成百上千的内含子。
The genetic parasites that arrived with the ancestor of the mitochondrion began to replicate like crazy, littering the main genome with hundreds of introns.
非编码DNA，包括内含子，重复元件，和潜在激活转座子，其长期的沉默需要有效的机制。
Noncoding DNA, containing introns, repetitive elements, and potentially active transposable elements, requires effective mechanisms for its long-term silencing.
目的调查广东地区汉族人群MICA基因第5外显子和MICB基因第1内含子微卫星多态性分布。
Objective To investigate the genetic polymorphism of microsatellite in the exon 5 of MICA gene and the intron 1 of MICB gene in Guangdong Han population.
目的调查广东地区汉族人群MICA基因第5外显子和MICB基因第1内含子微卫星多态性分布。
Objective To investigate the genetic polymorphism of microsatellite in the exon 5 of MICA gene and the intron 1 of MICB gene in Guangdong Han population.
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