查询词典 polymorphism

The point mutations of the 12th coden of ras gene and p53 E5 and E7 gene were studied in 40 cases w ith laryngeal squamous cell carcinomas by PCR-SSCP(polymerase chain reaction-s ingle stranded conformational polymorphism).

应用多聚酶链反应-单链构像多态性分析方法分析40例喉鳞状细胞癌H-ras，K-ras，和N-ras基因的第12密码子，p53 基因第5，7外显子中点突变的情况。

The qualitative and quantitative analysis of schizophrenia and single nucleotide polymorphism of catechol-O-methyltransferase , Proline Dehydrogenase and DYSBINDIN genes were done by using transmission disequilibrium test . Results:(1) The symptoms of first-episode schizophrenia were divided into four independent symptom dimensions: psychomotor poverty, reality distortion, disorganisation and depression-anxiety.

4采用传递不平衡检验、单倍型传递不平衡检验和定量性状传递不平衡检验的方法对6号、22号染色体上3个候选基因，即儿茶酚氧位甲基转移酶(catechol-O-methyltransferase，COMT)、脯氨酸脱氢酶(Proline Dehydrogenase，PRODH)和DYSBINDIN基因的9个单核苷酸多态性(single nucleotide polymorphism，SNP)位点与精神分裂症、神经认知功能、人格特质和临床症状表现的关系进行了定性和定量的遗传学分析。

Methods Polymerise chain reaction and restriction fragment length polymorphism were used to analyze the polymorphisms of MTHFR genes C6677T and A1298C in 56 patients of colorectal cancer and 143 age-and-sex-matched control subjects.

方法以聚合酶链反应和限制性片段长度多态方法，对56例直肠癌患者和143例正常人对照的MTHFR基因C677T和A1298C基因型进行检测分析其对直肠癌风险的相关性。结果在正常对照组中，MTHFRC677TCC、CT、TT基因型频率分别为62·90%、35·08%和2·12%，而在直肠癌病人中分别为58·93%、26·77%和14·26%。A1298C与A1298C基因型在病例和对照中的分布差异无显著性意义。

AFLP markers were applied to 30 melon accessions to study polymorphism and cluster analysis.

利用 AFLP 技术对30个甜瓜材料进行多态性和聚类分析研究。

Six pairs of primers with polymorphism among 36 accessions were used to amplify the genomic DNA.

利用分子标记SRAP技术，对36个甘薯品种进行了DNA多态性分析。

By theoretical calculation, the frequence of polymorphism between the pair of NILs obtained after 7 generals backcrosses should be 4.5 polymorphic DNA fragments every 100 primers.

在100个随机引物中找到了3个引物在这对抗白粉病的近等基因系中所扩增出的带型出现差异。

32B is a key Chinese maintainer line used for hybrid rice breeding. However, it isof poor quality because of a high AAC, a high gelatinization temperature, andnon-fragrant. It is known that the AAC, GT and fragrance traits are controlled by the Wx,starch synthaseⅡa and fragrance genes. The quality ofⅡ-32B was improved byintrogressing the Wx, SSⅡa and fgr genes from YixiangB, another maintainer line, that has alow AAC, a low GT and fragrant sensory, with the assistance of the functional markers. TheWx microsatellite [_(17) allele] SSⅡa single nucleotide polymorphism and fgrinsertion/deletion allele (8 bp), were transferred toⅡ-32B by two backcrosses and twoselfings.

通过两次回交和两次自交，并利用功能标记的辅助选择，将来自品质优良保持系宜香B(有香味，低AAC、GT)中Wx-_(17)、SSⅡa-TT和fgr(8bp缺失)等位基因导入到品质较差Ⅱ-32B(高AAC，高GT，没有香味)中，以改良其品质。

With the DSC and compressing test method,effect of more than 10 kinds of inorganic salt on AN polymorphism and caking property is discussed.

它既可作为农用肥料，又是制造工业炸药的主要原料，但硝酸铵容易吸湿结块，这在很大程度上影响了它的使用。

This thesis gave a study on the polymorphism of ob gene in erhualian, xiang pig, Large White, Duroc, Landrace, Pietran and Landrace X erhualian crossbreeds , by means of Bi-PASA.

本文采用Bi-PASA方法对二花脸、香猪、大约克、杜洛克、长白、皮特兰和苏钟1系猪七个类型，共计420头猪的DNA样进行了OB基因的分型研究，分析了各基因型之间在产仔数性状和生长性状上的差异，以及各个品种类型在该位点的多态性。

Amplified fragment length polymorphism was performed on 41 strains of V dahiiae of cotton in search of DNA probes specific for distinguishing between nondefoliating strains and defoliating strains. Specific bands of 433 base pairs and 1 lObp amplified only from nondefoliating strains were obtained using two pairs , E64 M53 and E49 M65 ,which named EM433 and EM110, respectively.

选用25对EcoRI和MseI引物组合，对供试的41个V.dahliae进行AFLP扩增，筛选到两对引物E64、M53和E49、M65，能分别扩增出433bp和110bp两条仅为V.dahliae非落叶型菌系独有的特异片段，可将落叶型与非落叶型菌系分开，这两条特异片段被命名为EM_(433)和EM_(110)。

It was just a normal day of school

那只是上学的普通一天

Which is a very good reference in this issue.

这是一个在这个问题上很好的参考。