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Title:

DNA Replication

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DNA Replication Serving the Hereditary Function Overview Manufacture of an exact copy of the DNA contained within a cell Required to occur prior to cell division ... – PowerPoint PPT presentation

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Title: DNA Replication


1
DNA Replication
  • Serving the Hereditary Function

2
Overview
  • Manufacture of an exact copy of the DNA contained
    within a cell
  • Required to occur prior to cell division
  • Occurs only once in the life of a cell.

3
Overview
  • Semi-conservative
  • Hershey-Chase experiment
  • Each daughter molecule is half old and half new
  • Errors mutation

4
Base Pairing
  • AT
  • Two H Bonds
  • G-C
  • 3 H bonds
  • Number of AT
  • Number of GC

5
Types of mutations
  • Substitution
  • Deletion
  • Can cause frame shift
  • Addition
  • Can cause frame shift

6
Major Components Involved
  • Helicases
  • Topoisomerases
  • Single stranded binding proteins (SSB)
  • Primase
  • DNA Polymerase III
  • DNA Polymerase L
  • DNA Ligase

7
DNA Recipe function
  • Transcription
  • Copy DNA into RNA
  • Nucleus in eukaryotic cells
  • Translation
  • Read genetic code in RNA
  • Produce protein
  • Cytoplasm
  • Ribosomes
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