DNA复制转录和翻译-幻灯片(1)DNA复制(replication)——由亲代DNA合成两个相同的子代 DNA的过程（DNA指导的DNA生物合成）。复制 亲代DNA 子代DNA 一、复制可能的几种方式 全保留式半保留式混合式 DNA复制方式－半保留复制梯度离心结果 含重氮-DNA的细菌 培养于普通培养液 第一代 继续培养于普通培养液 第二代 —...
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
(semi-conservativereplication) 当DNA进行复制时,双螺旋结构解开成两条单链,各自作为模板合成与之互补的新链。在子代DNA双链中,一条是来自于亲代,另一条完全重新合成。这种复制方式称为半保留复制 半保留复制 按半保留复制方式,子代DNA与亲代DNA的碱基序列一致,即子代保留了亲代的全部遗传信息,体现了遗传的保守性。
Transcription TRANSCRIPTION is the process by which a DNA gene is “rewritten” into RNA Transcription A gene is only a segment of DNA Only the gene is transcribed, not all of the DNA (like replication) DNA Transcription mRNA Transcription 3 phases: Initiation (“the beginning”) Enzymes recogn...
replication- DNA is used as a template to make more DNA, resulting in 2 DNA molecules each with one old and one new strand. In transcription DNA is used as a template to make RNA (mRNA). In translation the sequence of mRNA is decoded into a protein...
chapter 28-DNA replication PartIVInformationTransfer •DNAreplication•Transcription•Translation Whatisthecentraldogmaofthemolecularbiology?Chapter28DNAreplication 28.1HowisDNAreplicated?1.DNAreplicationissemiconservative2.DNAreplicationisbidirectional3.DNAreplicationissemidiscontinuous HowisDNAreplicated?-I DNA...
第十三章 DNA复制(DNA replication).ppt,Chapter 13 DNA replication 13.1 Introduction 13.2 DNA polymerases are the enzymes that make DNA 13.3 DNA synthesis is semidiscontinuous 13.4 Coordinating synthesis of the lagging and leading strands 13.5 The replic
分子生物学课件5.DNA复制.ppt,5. DNA复制 DNA Replication (Duplication) 5.1 DNA复制的特点 The Characteristics of DNA Replication 5.2 参与DNA复制的酶体系 Enzymes and relative proteins in DNA replication 双螺旋DNA的复制是DNA聚合酶催化的酶促反应过程。实际上
1、 Outline “Central dogma” General properties of DNA transcription RNA polymerase Detailed mechanisms of DNA transcription 1.Bacterial DNA transcription 2.Eukaryotic DNA transcription 3.Archaeal DNA transcription Transcription Translation Replication Replication Retro transcription Gene expression Bas 2、ic ...
1、外显子exon 内含子intron GT-AG法那么 E1E2E3 5’I1I2 3’转录GTAG 加工 编码序列 断裂基因splitgene2、侧翼序列regulatorsequence启动子promoter增强子enhancer终止子terminator Transcriptionstartsites Transcriptionstopsites E1E2E3 5’I1I2 3’GTAG 断裂基因splitgene2、侧翼序列regulatorsequence启动子promoter ...