Empfohlen
Weitere ähnliche Inhalte
Was ist angesagt?
Was ist angesagt? (20)
Andere mochten auch
Andere mochten auch (14)
Ähnlich wie DNA Lecture slides
Ähnlich wie DNA Lecture slides (20)
Mehr von Jmason1
Mehr von Jmason1 (16)
Kürzlich hochgeladen
Kürzlich hochgeladen (20)
DNA Lecture slides
- 2. What was known about DNA? • It could be found in almost all cells • It contained phosphorus in the form of phosphate.
- 3. What was known about DNA? • It contained a sugar, deoxyribose. • It contained 4 forms of nitrogen containing bases; purines - adenine and guanine and pyrimidines - thymine and cytosine.
- 4. “#hat is the structure of DNA?”
- 5. Maurice Wilkins Rosalind Franklin Kings College, London
- 6. James Watson and Francis Crick Cambridge College, London
- 7. Linus Pauling Chemistry at California Institute of Technology (Caltech)
- 8. Nucleotide
- 9. nucleotide monomer nucleotide (sugar, phosphate and nitrogen polymer base A, T, C orG) (chain)
- 10. Erwin Chargaff calculated a “rough equivalent” between adenine and thymine molecules and between cytosine and guanine molecules. adenine guanine thymine cytosine
- 11. X-ray Crystallography right -hand Rosalind Franklin’s photo 51 double helix
- 12. Complementary Base Pairing C-G and A-T
- 13. Watson and Crick with their model of DNA double helix 1953
- 17. DNA Replication or Synthesis • enzymes separate or unzip the two strands (breaks the H bonds) • the two unwound strands each become a template for the new strands to be built • the new nucleotides are paired and inserted • enzymes “proofread the new strands and seals the base pair