TAILIEUCHUNG - Lecture Molecular biology: Chapter 20 - Robert F. Weaver

In chapter 3 we learned that genes have three main activities. One is to carry information, and we have spent most of the intervening chapters examining how cells decode this information through transcription and translation. Another activity of genes is to participate in replication. The next two chapters will examine this process in detail. In this chapter we will also consider DNA damage and repair. | Molecular Biology Fourth Edition Chapter 20 DNA Replication I: Basic Mechanism and Enyzmology Lecture PowerPoint to accompany Robert F. Weaver Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. General Features of DNA Replication Double helical model for DNA includes the concept that 2 strands are complementary Each strand can serve as template for making its own partner Semiconservative model for DNA replication is correct Half-discontinuous (short pieces later stitched together) Requires DNA primers Usually bidirectional 20- Three Hypotheses of Replication Three methods of DNA replication were considered: Semiconservative Conservative Dispersive 20- DNA replicates in a semiconservative manner When parental strands separate Each strand serves as template Makes a new, complementary strand Semiconservative Replication 20- Semidiscontinuous Replication DNA replication in E. coli is semidiscontinuous One strand is replicated .

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• Molecular biology
• Lecture Molecular biology
• Sinh học phân tử
• Amino acids
• Basic mechanism
• DNA replication
• High Yield cell and molecular biology
• Cell and molecular biology
• The cell cycle
• Molecular biology of cancer
• Cell biology of the immune system
• Molecular biology techniques
• Identification of human disease genes
• Campbell biology
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• Molecular biology of the gene
• Chromosome replication
• Meiosis and genetic recombination
• The human nuclear genome
• The human mitochondrial genome
• Molecular cloning methods
• Gene cloning
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• Molecular tools
• Studying genes
• History of genetics
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• Molecular genetics
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• Molecular biology of microorganisms
• Different facets
• Plant molecular biology
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• Molecular diagnostics
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• Mendel’s Laws
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• Mechanism of transcription
• RNA polymerase structure
• Lac operon
• Bacterial transcription
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• DNA Protein interactions
• The λ family of repressors
• Eukaryotic RNA polymerases
• RNA polymerases
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• Transcription activators in eukaryotes
• RNA polymerase II
• Histones in the nucleosome
• Nucleosome structure
• Messenger RNA processing I
• Genes in pieces
• RNA processing II
• Cap structure
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