PPT-Dna replication

SCL163 Describe the basic process of DNA replication and how it relates to the transmission and conservation of the genetic information DNA and Its structure DNA deoxyribonucleic acid is a large organic. WHAT YOU WILL LEARN. -process of DNA making copies . -role of enzymes in copying DNA. -leading and lagging strands in DNA replication. READING Q. ’. s . 1-LIST:. -the 3 phases of semi-conservative replication. DNA Structure. The discovery of the structure. Francis Crick and James Watson. The deoxyribonucleic acid (DNA) molecule is the genetic blueprint for each cell and ultimately the blueprint that determines every characteristic of a living organism. The DNA molecule was discovered in 1951 by Francis Crick, James Watson, and Maurice Wilkins using X-ray diffraction. . Models of DNA replication: Meselson-Stahl Experiment. DNA synthesis and elongation. DNA polymerases. Origin and initiation of DNA replication. Prokaryote/eukaryote models (circular/linear chromosomes). The function of DNA in the cells is to. preserve genetic information.. transfer genetic information to new cells as the strands of DNA are copied.. DNA Replication. In . DNA replication. ,. the strands in the original or parent DNA molecule separate to allow the synthesis of complementary DNA strands.. DNA REPLICATION. DNA IS COPIED. 1. DURING . S-phase. of . INTERPHASE. PREPARATION FOR CELL DIVISION. SEPARATION. 2. THE . STrAND. OF DNA IS . UNZIPPED. BY . HELICASE. 3. THE POINT OF SEPARATION IS CALLED THE . Dr. Kevin Ahern. Structure. Structure. Structure. One Strand of DNA. Structure. Introduction. Structure. Introduction. DNA Structure. DNA Forms. Semi-Conservative Replication. Discontinuous. Replication. . §. 4.3a DNA Replisome. . §. 4.3b DNA Damage. §. 4.3c DNA . Repair. IV. NUCLEAR BIOCHEMISTRY. §. 4.3a . DNA Replisome. Synopsis . 4.3a. DNA replication involves making . copies or “. replicas” of DNA. Study Material for. . . B.Sc. Part II. . Botany . Hons. .. . . Paper IV. . Dr. Pushpanjali Khare. Sr. . Lecture 4. DNA . replication. Before . each cell . division, . new copies . must be made of each of the many molecules that form . the cell. , including the duplication of all DNA molecules. . DNA replication . Something to think about... When a species . reproduces. , there is . genetic continuity . maintained from one generation to the next.. WHAT . is responsible for this continuity?. HOW . does this continuity happen?. Honors Biology. Mrs. Sims. Let’s Start with a Video. Please view the video before you start this presentation. . DNA Replication Animation. **This animation is created by McGraw Hill, the publisher of your textbook.. . REPLICATION – GENERAL PRINCIPLES. START. Must be ready . Must know where to start . FINISH. Must all finish . Must ensure that each piece of DNA is replicated only once . Therefore must know where to finish . . What is DNA?. DNA is a . Nucleic Acid in the nucleus. Polymer of . Nucleotides. Each nucleotide consists of. Deoxy. ribose (5-carbon sugar) . Phosphate group. a nitrogen-containing base. Four bases. preserve genetic information.. transfer genetic information to new cells as the strands of DNA are copied.. DNA Replication. In . DNA replication. ,. the strands in the original or parent DNA molecule separate to allow the synthesis of complementary DNA strands..