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Chapter 12: DNA and RNA

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Describe what the following scientists discovered1. Griffith2. Avery 3. Hershey and Chase4. Pauling and Corey5. Franklin and Wilkins6. Watson and Crick7. Brenner8. Gilbert

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DNAPhosphate

deoxyribose

Adenine

Thymine

Cytosine

Guanine

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12-2: Chromosomes and DNA Replication1. histoneshomepage.ntlworld.com

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DNA ReplicationEnzymes used1. DNA Polymerase: adds nucleotides onto DNA and proofreads the DNA as it is being built2. Helicase: unwinds the double helix

genmed.yolasite.com

http://sciencestage.com/v/657/dna-replication-process.html

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12-3: RNA and Protein Synthesis

RNA Structure

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3 types of RNA1. mRNA

2. rRNA

3. tRNA

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Transcriptionbiology.unm.edu

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Genetic Code

DNA: TACCGCTUGAGGACTmRNA:amino acids

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Translation

users.rcn.com

http://vcell.ndsu.edu/animations/translation/movie-flash.htm

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MutationsFrameshift:

Chromosomal MutationsOriginal chromosome: ABC~DEFDeletion: AC~DEFDuplication: ABBC~DEFInversion: AED~CBFTranslocation: ABC~DEF GHI~JKL

ABC~JKL GHI~DEF

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Gene Regulation1. operon:

Attachments

histones.jpg

DNA_Replication2pngversion.png

transcription.gif

genetic%20code.jpg

Translation.gif

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