DNA_2008 - Chapter 16 DNA What experiments identified DNA...

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Chapter 16 - DNA What experiments identified DNA as the hereditary material? What is the structure of DNA, and what does the structure suggest about DNA function? How do cells replicate DNA?
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Fig. 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 Mouse dies Mouse healthy Mouse healthy Living S cells RESULTS EXPERIMENT
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Q: Frederick Griffiths experiments with bacterial transformation demonstrated that A) Pathogenic strains can survive heat better than non-pathogenic strains B) The polysaccharides that make pathogenic strains form smooth colonies are toxic C) DNA is the hereditary material D) Bacteria can acquire hereditary information from their environment E) Bacteria can become antibiotic-resistant
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Avery, McLeod & McCarty - 1944 Purified DNA transformed bacteria, but not purified proteins. Treatment with DNase, but not RNase or protease, eliminated transformation activity.
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bacteriophage T2
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Hershey-Chase:
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