However, some of the genes used to manufacture GM foods have not been in the food chain before and the introduction of new genes may cause changes in the existing genetic make-up of the crop.
然而，用于生产转基因食品的一些基因以前从未出现在食品链中，因此，采用新基因可能改变农作物现有的遗传基因。
Objective: To construct the recombinant expression vector of genes encoding light chain of antibody against Mumps Viruses.
目的：构建抗腮腺炎病毒抗体轻链基因重组表达载体。
Objective:To determine differentially expressed genes of mitochondrial electron transport chain of the liver cells of the heat adaptation rats.
目的：研究机体获得热适应后肝脏细胞线粒体呼吸链相关基因的差异表达。
Some companies modify the genes of animals and plants that are part of our food chain.
一些公司修改你食物链一部分的动植物基因。
Methods the genes were amplified from the heavy (VH) and light (VL) chain variable regions of hybridoma cell strain 2f3 by RT-PCR and identified by DNA sequencing.
方法利用RT -PCR方法从杂交瘤细胞株2f 3中扩增出单克隆抗体重链可变区和轻链可变区基因。
The nucleotide sequence analyses indicated that the cloned genes coded the variable light and heavy chain domains from mouse antibodies respectively.
核苷酸序列分析表明所克隆基因分别为抗体轻、重链可变区基因。
Objective: to study and establish an allelic specific primer polymerase chain reaction (ASP-PCR) technique system and to apply this technique to study single nucleotide polymorphism (SNP) of genes.
目的：研究建立等位基因特异性引物pcr技术体系，并将其应用于基因单核苷酸多态性研究工作。
Methods These three genes were quantified by real-time quantification polymerase chain reaction (PCR) in er positive and er negative breast cancer cell lines.
方法应用实时监测聚合酶链反应检测这三种受体基因在雌激素受体阳性和雌激素受体阴性乳腺癌细胞系中的表达。
Discovering the molecular basis of mitochondrial respiratory chain disease is challenging given the large number of both mitochondrial and nuclear genes that are involved.
发现线粒体呼吸链疾病的分子基础面临着巨大的挑战，即必须同时考虑线粒体和核基因的影响。
MethodGenotypes and alleles of polymorphisms of both genes were determined with polymerase chain reactionrestriction fragment length polymorphism assay (PCRRFLP) of 296 subjects in Han Chinese.
方法应用聚合酶链反应限制性片段长度多态性技术检测296例两个基因多态位点的等位基因、基因型。
MethodGenotypes and alleles of polymorphisms of both genes were determined with polymerase chain reactionrestriction fragment length polymorphism assay (PCRRFLP) of 296 subjects in Han Chinese.
方法应用聚合酶链反应限制性片段长度多态性技术检测296例两个基因多态位点的等位基因、基因型。
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