突变的

Difference vector is defined by which bad data and sudden load change can be identified under topology error condition.

在新息图网络中，定义了差别向量以及不良回路和突变回路的概念，进行拓扑错误情况下的坏数据和负荷突变的检测识别。

According to the characteristic of hybridize and sudden change of binary coding chromosome in classical genetic algorithm,this paper defines the rule of hybridize and sudden change of continuous variables .

根据传统遗传算法中对于二进制编码染色体的杂交和突变的特点，定义了连续变量的杂交、突变规则。

In this study,two SNPs of chicken FASN gene were chosen to analyze genetic diversity and their associations with chicken growth and carcass traits by using a F_2 designed resource population.Results showed that:(1) In the PCR-RFLP site of HaeⅢ,allelic frequencies differed much among different chicken breeds,as B frequencies are the highest in Red Jungle Fowl(0.85),and the lowest in Taihe and Yugan Black(both 0.21).In the PCR-RFLP site of PstⅠ,A frequencies are the highest in Chongren Partridge(0.5),and the lowest in Naked Neck chicken(0.19),and the difference of gene frequencies was small among chicken breeds.

研究了脂肪酸合成酶(Fatty acid synthase， FASN )基因最后1个内含子2个突变的多样性，并运用资源参考家系研究了这2个突变对鸡体重、脂肪沉积性状的影响，结果表明：(1)红色原鸡Hae Ⅲ-PCR-RFLP位点B基因频率为最高(0.85)，泰和鸡及余干乌黑鸡为最低(0.21)，品种间差异较大，但未发现肉用与蛋用鸡种间的差异；在Pst I-PCR-RFLP位点上， A基因频率在崇仁麻鸡中表现为最高(0.5)，在裸颈鸡为最低(0.19)，品种间差异较小。

Outcrossing, the second fundamental aspect of sex, is maintained by the advantage of masking mutations and the disadvantage of inbreeding which allows expression of recessive mutations (commonly observed as inbreeding depression).

有性生殖的第二个基本方面是异型杂交。异型杂交是通过掩蔽突变优势和近亲繁殖劣势来维持的。近亲繁殖允许隐性突变的表达。这与查尔斯·达尔文相一致。

Of other variants, the novel homoplasmic A4435G mutation absent in 164 Chinese controls is localized at 3' end adjacent to the anticodon, at conventional position 37 (A37), of tRNAMet.

实际上在A4435G和G11778A都有突变的细胞中可观察到tRNAMet稳态水平的有效降低，而在仅有G11778A突变的细胞中则不能。

The D-loop region was found to be a hot spot for somatic mutation in mtDNA of the tumors. The results revealed that 45.7 %(16/35) of the HCCs carried somatic mutation in the D-loop region, and the most mutations are homoplasmy.

过去的研究显示：粒线体DNA D-loop 区域是发生体突变的好发点，本论文的结果显示有45.7 %(16/35) HCC含有D-loop 区域体突变且多为同质性。

Diverse products including monocyclic, tricyclic, and different tetracyclic products were isolated from the S.

为了更进一步的了解在不同的氨基酸改变下对於氧化鲨烯环化酵素酪氨酸-510所造成突变效应，我们继而利用&定点饱和突变&的方式来进行探讨。

To investigate distribution of gene mutations in LPL exon 9 in Chinese population and to study the possible effects of the mutation on plasma lipids, variants were screened by PCR-SSCP and DNA sequencing. Ser~(447)→stop polymorphism was identified by PCR-RFLP . the plasma lipids in stop447 carrier group and stop447 noncarrier group were compared and analysis.

为探讨中国人群LPL基因外显子9常见突变的种类、频率以及其可能产生的影响，我们利用聚合酶链反应-单链构象多态性分析和DNA测序技术及PCR-RFLP技术检测出我国人群的LPL外显子9基因突变、基因型和等位基因频率，确定了中国人群Ser~(447)→stop这一多态性位点。

Recently, FLT3 mutations have been found in patients with ALL, MDS and AML (15～35%), making FLT3 one of the most frequently mutated genes in haematological malignancies.

近来FLT3突变的报道见于ALL(1～3％)、MDS(5～10％)、AML(15～35％)等，FLT3已成为血液肿瘤中突变频率最高的基因之一。

Objective To investigate the relationship between HBV intrauterine infection and gene mutation by analysis of HBV preS/S gene sequence.

目的 研究宫内传播中乙型肝炎病毒前S/S基因的突变，探讨宫内感染乙型肝炎病毒与HBV基因突变的关系。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。