Notes: 10/22

I. The discovery of DNA and the Griffith experiment
*DNA: Deoxyribonucleic Acid
-Double-Stranded Molecule
-4 Bases: A, T, C, G (A dbl bonds to T and C triple bonds to G)
-Bases held together in string by “sugar-phosphate backbone”
-DNA is not harmed by heat like proteins are*; DNA doesn’t denature a high temperatures

*Bacterial Genetics not different (in basics) from anybody else’s genetics.

a. 1928: Griffith Experiment
i. Observation: mouse drawings…

*Question: Why do organisms have the traits they have? What chemical is responsible for traits to be heritable? (able to be passed from one generation to the next)

Hypothesis 1: Proteins
-Support for proteins made of amino acids (20 Amino Acids) and living things are very complex
so probably a complex kind of chemical forms our instructions.

**Cody Kruckenberg

What is the moral of the Griffith experiment?
- Molecule of inheritance/genetic material/instructions for bacteria NOT destroyed by heat.
- Laid the groundwork for later research on DNA and the discovery of DNA.
Alex Permann

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