1. 6.1 DNA and the Code of Life
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2. nuclein
A name given to DNA when it was discovered by Friedrich Miescher in 1869.

3. Joachim Hammerling
performed experiments on Acetabularia to verify that the genetic material was in the nucleus.

4. Alfred Hershey and Martha Chase
1952- showed that viruses needed only to inject their DNA into a bacteria to produce more viruses

5. Phoebus Levene 1920’s DNA was composed of:
A pentose sugar (cyclic, 5-carbon sugar)
A nitogenous base
A phospate group, PO43-

6. 5 Carbon sugar
Deoxyribose has one less oxygen atom than ribose.

7. Phosphate group
PO43-

8. Nitrogenous Bases
Adenine, guanine, cytosine, thymine

9. Erwin Chargaff
1940 The amount of Adenine, A, is equal to the amount of Thymine, T. The amount of Guanine, G, is equal to the amount of Cytosine, C.

10. Nucleotide
DNA has a negative charge because of the phosphate ions in its backbone.

11. Rosalin Franklin
1951 X-ray crystallography: x-rays were aimed at a crystal of DNA to produce a diffraction pattern.

12. James Watson and Francis Crick
1953 DNA model

13. Complimentary base pairing