Title: 1952 Alfred Hershey and Martha Chase
11952 Alfred Hershey and Martha Chase
2Figure 5-2 Chemical structure of a nucleic acid.
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3(No Transcript)
4Figure 5-19 Electron micrograph of a T2
bacteriophage and its DNA.
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5Figure 29-24 Agarose gel electrophoresis pattern
of SV40 DNA.
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6Table 5-2 Sizes of Some DNA Molecules.
7Figure 5-14 Schematic representation of the
strand separation in duplex DNA resulting from
its heat denaturation.
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8Figure 5-15 UV absorbance spectra of native and
heat-denatured E. coli DNA.
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9Figure 5-16 Example of a DNA melting curve.
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10Figure 5-17 Variation of the melting
temperatures, Tm, of various DNAs with their G
C content.
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11Figure 5-10 X-ray diffraction photograph of a
vertically oriented Na DNA fiber in the B
conformation taken by Rosalind Franklin.
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12Figure 5-11 Three-dimensional structure of B-DNA.
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13Figure 5-12Watson-Crick base pairs.
Chargaffs rules 1952
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14Figure 29-1a Structure of B-DNA. (a) Ball and
stick drawing and corresponding space-filling
model viewed perpendicular to the helix axis.
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15Figure 29-1b Structure of B-DNA. (b) Ball and
stick drawing and corresponding space-filling
model viewed down the helix axis.
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16B-DNA. A-DNA Z-DNA
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17DNA tutorial link http//molvis.sdsc.edu/dna/inde
x.htm
18Figure 29-7 The conformation of a nucleotide unit
is determined by the seven indicated torsion
angles.
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19Figure 29-8 The sterically allowed orientations
of purine and pyrimidine bases with respect to
their attached ribose units.
20Table 29-1 Structural Features of Ideal A-, B-,
and Z-DNA.
21Figure 5-13 Demonstration of the
semiconservative nature of DNA replication in
E. coli by density gradient ultracentrifugation.
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22Figure 5-31 Action of DNA polymerases.
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23Figure 5-32a Replication of duplex DNA in E. coli.
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24Figure 5-32b Replication of duplex DNA in E. coli.
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