DNA Replication Notes
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DNA Replication Notes

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General notes on DNA structure/replication.

General notes on DNA structure/replication.

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DNA Replication Notes Presentation Transcript

  • 1. DNA Replication Occurs inside the nucleus!
  • 2. Nitrogenous Base (Adenine)
  • 3. Nitrogenous Base (Adenine)
  • 4. Nitrogenous Base (Adenine) Complementary Base Pairs Adenine (A) - Thymine (T) Cytosine (C) - Guanine (G) Purines - Adenine, Guanine Pyrimidines - Cytosine, Thymine
  • 5. Nitrogenous Base (Adenine) Complementary Base Pairs Adenine (A) - Thymine (T) Cytosine (C) - Guanine (G) Purines - Adenine, Guanine Pyrimidines - Cytosine, Thymine
  • 6. “Backbone” Nitrogenous Base (Adenine) of DNA Complementary Base Pairs Adenine (A) - Thymine (T) Cytosine (C) - Guanine (G) Purines - Adenine, Guanine Pyrimidines - Cytosine, Thymine Nucleotide -monomers of DNA
  • 7. Nitrogenous Base (Adenine) Complementary Base Pairs Adenine (A) - Thymine (T) Cytosine (C) - Guanine (G) Purines - Adenine, Guanine Pyrimidines - Cytosine, Thymine Nucleotide Hydrogen Bond
  • 8. A.K.A - Leading Strand
  • 9. A.K.A - Leading Strand A.K.A - Lagging Strand
  • 10. DNA Helicase “Unzips” DNA A.K.A - Lagging Strand A.K.A - Leading Strand
  • 11. DNA Helicase “Unzips” DNA A.K.A - Lagging Strand A.K.A - Leading Strand DNA Polymerase - adds nucleotides continuously on Strand I
  • 12. DNA Helicase “Unzips” DNA A.K.A - Leading Strand A.K.A - Lagging Strand DNA Polymerase - adds nucleotides continuously on Strand I …but discontinuously on Strand II using “Okazaki Fragments”
  • 13. DNA Helicase “Unzips” DNA A.K.A - Leading Strand A.K.A - Lagging Strand Okazaki Fragments DNA Polymerase - adds nucleotides continuously on Strand I …but discontinuously on Strand II using “Okazaki Fragments”
  • 14. DNA Helicase “Unzips” DNA A.K.A - Leading Strand A.K.A - Lagging Strand Okazaki Fragments DNA Polymerase - adds nucleotides continuously on Strand I …but discontinuously on Strand II using “Okazaki Fragments” The fragments are “stitched” together by the enzyme Ligase