一、遗传密码 遗传密码(genetic code):是生物蛋白质合成的密码, 是遗传信息的单位,由A、U、C、G组成。 遗传密码又是如何翻译呢? 首先是以DNA的一条链为模板合成与它互补的 mRNA,根据碱基互补配对的规律,在这条mRNA链 上,A变为U,T变为A,C变为G,G变为C 因此,这条mRNA上的遗传密码与非模板DNA链 是一样的,所不同的只是U代替了T。然后再由mRNA 上的遗传密码翻译成多肽链中的氨基酸序列

9.1DNA作为主要遗传物质的证据 9.2DNA的结构、复制及其损伤修复 9.3基因的概念与发展 9.4遗传信息的表达与调控 9.5核酸研究技术简介 9.6人类基因组计划简介 9.7遗传工程及其应用

How DNA as genetic materials was established (also summarized in er including structure and components Basic properties of DNA, i xt slide)

一、DNA的合成(复制) 二、DNA的损伤和修复 三、RNA的合成(转录) 四、RNA生物合成的抑制剂 五、逆转录作用

Many intracellular proteins are required to interact or bind to other macromolecules within a bind DNA. Such proteins often have conserved structural features, called motifs, whis at can cell in order to function properly. One class of such proteins is comprised of proteins tha interact with DNA. One such motif consists of two closely aligned a-helices(shown as cylinders below)that each have leucine-rich regions. This motif is referred to as a leucine

All DNA is recombinant DNA. Genetic exchange works constantly to blend and rearrange chromosomes, most obviously during meiosis, when homologous chromosomes pair prior to the

Molecular Biology course CHAPTER 9: The mutability and repair of DNA

1、以Feulgen染色法为例学习细胞化学方法检测细胞核DNA的原理和方法； 2、观察DNA在细胞内的分布

一、 DNA芯片技术的操作流程 二、 DNA芯片技术的应用

大分子DNA物理图绘制 大分子DNA的分离技术