1.DNAhelixisunwoundandseperatedbyhelicasebybreakinghydrogenbondsbetweenbases.2.DNApolymeraseformsthenewcomplementarystrandsthroughcovalentbond.3.EachoftheDNAmoleculesformedhasoneoldandonenewstrand.DNAandRNA MeselsonandStahl'sresult –AnentirelynewmoleculeissynthesisedfromaDNAtemplate(whichremainsunaltered)–Eachnew...
它指明了遗传信息的标准流程,即“DNA→DNA(DNA 的自我复制,replication),DNA→RNA(转录,transcription),RNA→蛋白质(翻译,translation),蛋白质反过来协助前两项流程以及 DNA 的自我复制”。除了极少数的逆转录病毒(retrovirus)存在着 RNA→RNA(RNA 的自我复制)、RNA→DNA(逆转录,reverse transcription)的情况外,地球...
Basic Principles of Transcription and Translation RNA is the intermediate between genes and the proteins for which they code Transcription is the synthesis of RNA under the direction of DNA Transcription produces messenger RNA (mRNA) Translation is the synthesis of a polypeptide, which occurs under th...
2. Distinguish between transcription and translation. [4 marks] 3. Explain DNA replication. [3 marks] 4. Explain the significance of complementary base pairing for replication, transcription and translation. [8 marks] 5. Explain the role of transfer RNA (tRNA) in the process of translation. [...
DNAis a double helix structure of complementary bases which contain all the genetic information necessary for life. DNA goes through a process called transcription which copies the code intoRNA(ribonucleic acid). RNA, unlike DNA, is single-stranded and uses the nucleotide base uracil instead of th...
DNA Transcription & Translation *How do genes work? We’ve seen how DNA is replicated, but still haven’t learned exactly how genes work! The first step in understanding how genes work is to know how to “decode” the DNA. Decoding DNA The decoder: RNA (Ribonucleic acid) Long stranded ...
Transfer RNA | tRNA Overview, Structure & Function Ch 10. Processes & Steps of DNA... Ch 11. Transcription, Translation & Protein... Ch 12. Types & Effects of Genetic... Ch 13. Mendelian Genetics & Mechanisms of... Ch 14. Genetic Engineering & DNA... Ch 15. Microbiology: Cellular...
在传统分子生物学研究中,主要构建于「Replication」-基因(DNA)的复制、「Transcription」-RNA的转录、及「Translation」-蛋白质的转译等三个阶段,称之为分子生物学的中心定论( Central Dogma)。而在蛋白组学的助攻下,逐渐在中心定论之下发展出其他的不同研究领域,如基因表现的调控、RNA修饰、后转译(post-translation)等...
第三章 DNA复制、转录和翻译.ppt,第二章 DNA的复制、转录及翻译 Replication, transcription and translation of DNA 1.1 复制子 (replicon) 从每个复制起始点到复制终点的区域,能独立进行复制的单位。 原核生物:单一复制子 真核生物:多个复制子, 1.2 DNA复制的方向和
transcription转录(transcription) 以DNA为模板,在RNA聚合酶作用下合成RNA的过程 promoter启动子(promoter): 与基因转录启动有关的特定保守序列;启动子本身不被转录 transcription factor反式作用因子 又称调节蛋白(DNA结合蛋白DBP,或转录因子TF) 基本转录因子:是RNA聚合酶结合启动子所必需的一组蛋白因子,决定三种RNA(mRNA...