突变的

The site-saturated mutagenesis applying on the OSCTrp443 revealed that two truncated monocyclic intermediates, achilleol A and camelliol C, were concomitantly produced from the Trp443Ala and Trp443Lys mutants.

另ㄧ方面，关於OSCTrp443的饱和定点突变分析中，其中两个突变，Trp443Ala以及Trp443Lys同时产生了两个单环的产物achilleol A 和 camelliol C。

DHI indicates that the monsoonal circulation weakens after its climate jump in 1980, which is caused by the weakening of the easterly at 150~100hPa, while easterly at 200hPa does not weaken significantly.

DHI表征亚洲夏季风环流在1980年发生突变，突变后季风环流减弱，这主要是由于150～100hPa层东风的减弱，但这种东风的减弱现象在200hPa不明显。

Concentrations of PM and PAHs were high in the industrial area, and there were strong indirect mutagenic activities.

工业区大气中颗粒物质和多环芳香烃类化合物浓度较高，并具有很高的间接致突变活性和较弱的直接致突变活性。

RESULT ①Two different ITS2 sequences (GenBank accession number: AF416783, AF416784) and D3 sequences (AF416782, AF415594), named as An. minimus A and An. minimus C, were detected in this study. They differed by 5. 8％ in the ITS2 region with 22 fixed nucleotide substitutions and indels, and by 1. 5％ in D3 gene with 5 site mutations. There exists individual variation in the COII gene, but this variation is less than that among other members of Myzomyia Series such as An.

结果 ①分别发现两种不同的ITS2序列（GeneBank登录号：AF416783，AF416784）和D3序列（GeneBank登录号：AF416782，AF425594），与微小按蚊A和C同源。A、C两者ITS2序列22个固定位点存在碱基置换和插入／缺失，序列差异为4.8％；D3基因存在5个固定点突变，突变率1.5％。mtDNA-COII基因存在个体差异，但远小于同系其它成员如乌头按蚊、杰普尔按蚊间的变异。

In contrast, 10 (90.9%) of 11 cases contained nonsynonymous TP53 mutations characteristic of high-grade serous carcinomas.

相反，其中10例（90.9%）却发生了TP53基因的非同义突变，此突变是高级别浆液性癌的特征。

Nonsynonymous sites were far less than synonymous sites. The ratio of synonymous and nonsynonymous substitution were all less or equal to one manifesting that it did not effected by Darwin positive selection. But some sites affected by negative selection.

非同义突变位点远少于同义突变位点，同义与非同义替代速率比全部小于或等于1，表明MSTN基因编码区序列并未受到达尔文正向选择的影响，却受到一定的负向选择作用。

In the present study, the autotetraploid rice IR36-4X was treated with ion implantation technique by nitrogen ion beams and a polyembryonic seedling mutant (named as the IR36-Shuang) was identified in M2 generation. The mutant line was systematically investigated about the location of seedling in polyembryonic seedling, and the cytological initiation of the additional embryo in the 1R36-Shuang was observed and determined.

以低能氮离子束为诱变源，通过对同源四倍体水稻品系&IR36-4X&进行离子注入后在其第2代群体内筛选得到了1株具有多胚苗性状特征的突变株（IR36-双），对该突变株后代的多胚苗形态特征及其多胚来源进行了研究。

Furthermore, 27 of 35 of the IGHV sequences (77%) had mutations, with similar distributions after stratification either below or above the median time between the collection of the prediagnostic blood sample and the subsequent CLL diagnosis.

此外，35个IGHV序列中有27个（77 ％）有突变，对诊断前血液样本收集和随后CLL诊断的中位时间进行分层，突变具有类似的分布。

In osmads34, however, the main-axis meristem produced about 17 branch primordia, and the spikelet number in one panicle was reduced to 133, suggesting OsMADS34 is critical for controlling the inflorescence development in rice.

但在osmads34突变体中，主轴分生组织产生17个分支原基。同时，突变体的小穗数目却从野生型水稻的194朵减少到133朵。

Conelusion:Missense mutation of Tyr486Asp in Exon 5 of UGT1A1 gene is the pathogenic factor of the CN Ⅱ case in the family and recessively inherited.

Tyr486Asp突变是本例CN—Ⅱ家系的致病性基因，该突变不影响UGT1A1基因启动子区苯巴比妥酸的应答元件，其遗传规律符合常染色体隐性遗传。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。