DNA structure II - Western Oregon Universityguralnl/311DNA structure II.pdfProperties of A-DNA,...
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DNA structure II • DNA • Composition of DNA • Evidence for genetic material • Structure • Implications of the structure
Transcript of DNA structure II - Western Oregon Universityguralnl/311DNA structure II.pdfProperties of A-DNA,...
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DNA structure II
• DNA• Composition of DNA • Evidence for genetic material • Structure • Implications of the structure
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DNA & Nucleotides
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DNA and RNA nucleotides
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Evidence for genetic material: Griffith transformation
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Evidence for genetic material:Avery
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Hershey- Chase expt
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Structure
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Base Pairing Rules
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Watson-Crick Model
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Structure
• The double helix • base pairing rules • anti-parallel strands • bases/turn • major and minor
groove
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Models
B= low saltA= high saltZ DNA= left, 12 bases/turn
B-DNA A-DNA Z-DNA
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Properties of DNA
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Implications of the structure
• DNA replication
• Genetic Information stored in DNA molecule