DNA Replication

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DNA Replication
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DNA Replication

• DNA genetic material
• Replication copying of materials
• DNA Replication Copying of genetic material
• All organisms undergo DNA replication

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DNA Replication

• Overview
• Occurs during S phase of interphase
• Double helix is unwound
• Can predict the sequence of bases from original
  strand
• Each strand serves as a template for the new
  strand
• Double helix is reconnected

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DNA Replication

• Enzyme breaks hydrogen bonds between bases
• DNA Helicase
• Unzips the Double Helix a little at a time
• DNA bases are exposed

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DNA Replication

• Free nucleotides attach to their base pair.
• Free nucleotide individual nucleotide floating
  in cytoplasm
• Occurs while DNA is being unzipped
• Attach to bases via hydrogen bonds
• DNA Polymerase enzyme that bonds each nucleotide
  into a chain.

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DNA Replication

• Two new double helixes are formed
• DNA continues to unzip until the entire molecule
  is replicated.
• Each new molecule contains one new strand and one
  old strand of DNA
• Identical from the original strand.