1. DNA STRUCTURE

2. Where is DNA located? Prokaryotic vs Eukaryotic

3. Johann Freidrich Meisher 1869 Isolated the first crude extract of DNA from white blood cells. He called it nuclein.

4. Rosalind Franklin & Maurice Wilkens 1952 Used X-ray diffraction to understand the physical structure of the DNA molecule

5. James Watson & Francis Crick 1953 Formulated the correct double-helix structure of the DNA molecule.

6. Double Helix Is the shape of the DNA molecule that looks like “twisted ladder structure.” Made up of a backbone & complementary bases

7. Backbone Made up of sugar & phosphate molecules.

8. Complementary bases fit together based on shape. Thymine = Adenine Cytosine = Guanine

9. Nucleotide Made up of one phosphate, one sugar, one nitrogen base

10. What macromolecule is made when nucleotides are put together??

11. DNA DNA is a nucleic acid!

12. Which one is human?

14. All living things have the same DNA STRUCTURE! (all DNA is made up of phosphates, sugar, & bases) Genetic Code depends on order of the bases.

15. DNA > Chromosomes DNA is wound up very tightly in the form of a chromosome. Chromosomes are located in the nucleus of the cell.

16. PRACTICE….. If one strand of DNA has the base sequence CCGATT, the bases on the other strand of DNA are: _________________________________ If one strand of DNA has the base sequence TAAGGCGATGC, the bases on the other strand of DNA are: _________________________________