1. Discovering the structure of DNA DNA = Deoxyribose nucleic acid Made out of sugars (deoxyribose), phosphates and nitrogen bases

2. Discovering the structure of DNA Structure was discovered in 1953 by James Watson and Francis Crick

3. Discovering the structure of DNA Rosalind Franklin’s DNA image “Chargoff’s rule” A = T & C = G

4. Cell division and DNA replication Cells divide  Growth, Repair, Replacement Before cells divide they have to double cell structures, organelles and their genetic information

5. DNA replication

10. Original DNA strands

11. DNA replication Newly assembled DNA strands

12. DNA replication Semi-conservative replication

13. DNA replication Let’s build our own DNA model and simulate DNA replication