PPT-Structure & Replication of DNA

Unit 1 Key Area 2 Part 2 Replication of DNA Learning Intentions To name the requirements of DNA replication Explain why DNA replication is described as being semiconservative Describe the . 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). Learning Objectives. What happens during DNA replication?. How is a new polynucleotide strand formed?. Why is DNA replication known as ‘semi-conservative’?. Putting What We’ve Learnt So Far In To Context.... 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.. Semiconservative vs. Conservative. DNA Polymerase. RNA Primase. Okazaki Fragments. Replication Errors. TeachWithFergy . Preview File. . Please . enjoy this preview of your Power Point. . Some slides appear blank because they have been removed.. Yadi. Zhou. 2013.12.05. RecA. protein. 38 . kiloDalton. Essential for the repair and maintenance of DNA. A . RecA. structural and functional homolog has been found in every . species. Homologous protein in . By. Dr. R. C. . Nath. ; Associate Professor. Department of Zoology. Govt. Degree College, DMR. .. Structure of a DNA molecule. `. It . has not escaped our notice that the specific pairing we have postulated immediately suggests a possible copying mechanism for the genetic material. Study Material for. . . B.Sc. Part II. . Botany . Hons. .. . . Paper IV. . Dr. Pushpanjali Khare. Sr. . . Understanding DNA structure and replication is a prerequisite for understanding/using the principal tools of molecular biology . R. R. 0. R0. R0. 0. R0. R0. R. 0. R. RR. R0. 0. R0. 00. DNA: Structure & Replication. Directions: Front of card write term. On back write definition and draw picture . Chromosomes. Thread-like structure made of coiled DNA. Gene. Segment of DNA that codes for a specific trait. Nucleotide. 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?. (Chapters 6 and 3). . Presented by Dr. Laurie M. Erickson. Chair of the Department of Health Sciences. Blitstein Institute of Hebrew Theological College. Chicago, IL, USA.. 1. 6.1 Genome Size. Genome:. replicate (copy) DNA?. Growth. Reproduction. Repair. Where do we start?. Replication origin. – a specific sequence of DNA (or region on a chromosome) at which DNA synthesis, or replication begins. . 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..