DNA genetic material, structure-1

DNA genetic material, structure-1 - photograph of DNA...

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Chapter 16 DNA as the genetic material DNA structure Structural differences between DNA and RNA DNA replication
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LE 16-2 Living S cells (control) Living R cells (control) Heat-killed S cells (control) Mixture of heat-killed S cells and living R cells Mouse dies Living S cells are found in blood sample Mouse healthy Mouse healthy Mouse dies RESULTS
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LE 5-26a 5 end 3 end Nucleoside Nitrogenous base Phosphate group Nucleotide Polynucleotide, or nucleic acid Pentose sugar
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LE 5-26b Pentose sugars Deoxyribose (in DNA) Ribose (in RNA ) From chapter 5 (p. 87)
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LE 5-26b Nitrogenous bases Pyrimidines Purines Cytosine C Thymine (in DNA) T Uracil (in RNA) U Adenine A Guanine G
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LE 16-5 Sugar–phosphate backbone 5 end Nitrogenous bases Thymine (T) Adenine (A) Cytosine (C) DNA nucleotide Phosphate 3 end Guanine (G) Sugar (deoxyribose)
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example of “chemical” polarity primary structure 5'P -T-A-C-G- 3'OH --or-- P -T-A-C-G- OH --or-- T-A-C-G not the same as G-C-A-T
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LE 16-6 Franklin’s X-ray diffraction photograph of DNA Rosalind Franklin
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LE 16-6 Franklin’s X-ray diffraction
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Unformatted text preview: photograph of DNA Rosalind Franklin LE 16-6 Franklin’s X-ray diffraction photograph of DNA Rosalind Franklin LE 16-6 Franklin’s X-ray diffraction photograph of DNA Rosalind Franklin LE 16-6 Franklin’s X-ray diffraction photograph of DNA Rosalind Franklin LE 16-6 Franklin’s X-ray diffraction photograph of DNA Rosalind Franklin LE 16-UN298 Purine + purine: too wide Pyrimidine + pyrimidine: too narrow Purine + pyrimidine: width consistent with X-ray data LE 5-26b Nitrogenous bases Pyrimidines Purines Cytosine C Thymine (in DNA) T Uracil (in RNA) U Adenine A Guanine G LE 5-26b Nitrogenous bases Pyrimidines Purines Cytosine C Thymine (in DNA) T Uracil (in RNA) U Adenine A Guanine G LE 16-8 Adenine (A) Thymine (T) Guanine (G) Cytosine (C) Sugar Sugar Sugar Sugar LE 16-7 5 ′ end 3 ′ end 5 ′ end 3 ′ end Space-filling model Partial chemical structure Hydrogen bond Key features of DNA structure 0.34 nm 3.4 nm 1 nm...
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DNA genetic material, structure-1 - photograph of DNA...

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