DNA and RNA - 7. DNA rewinds DNA-3 Formulate hypotheses for...

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DNA and RNA Ted. Becker Biology WMCC Summer 2011
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3 parts of DNA Deoxyribose 5 carbon sugar missing one oxygen Phosphate group – (P with 3O 2 ) 4 Nitrogenous bases Adenine Guanine Cytosine Thymine
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Nitrogenous Bases Purines Pyrimidines Guanine Adenine Thymine Cytosine
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Chargaff’s Rules In DNA: Adenine always matches with Thymine Guanine always matches with Cytosine
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DNA-2 Describe DNA Replication Process to copy DNA during ____? Two strands are separated and each original strand used as template Eukaryotic chromosomes happens in 100’s of places at the same time
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1. Hydrogen bonds are broken between strands 2. DNA unwinds 3. DNA polymerase attaches new base pairs 4. Lagging strand and continuous strand 5. End up with two identical strands. Each with: One new One old 6. DNA polymerase checks for errors and fixes
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Unformatted text preview: 7. DNA rewinds DNA-3 Formulate hypotheses for DNA folding • Chromosomes need to fold to fit into nucleus • Chromosomes made of DNA with proteins • Histones allow DNA to fold and coil RNA-1 Describe the structure of RNA RNA-2 Describe the three types of RNA • mRNA – messenger RNA • rRNA – ribosomal RNA • tRNA – translational RNA rRNA tRNA Pro Syn • Transcription – RNA Polymerase – Introns out – Exons spliced • Translation – rRNA holds mRNA – tRNA Reads code – Peptide bonds form between adjacent Aa Genetic code Name:_____________________ Class:__________Circle and label one of each of the parts of DNA, be sure to include each of the 4 types of bases. When you are finished you should have 6 things circled and labeled....
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This note was uploaded on 09/13/2011 for the course ECON 101 taught by Professor Myers during the Spring '08 term at William & Mary.

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DNA and RNA - 7. DNA rewinds DNA-3 Formulate hypotheses for...

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