number1 - 1) 16 overview, 16.1 (293-298) A. Discuss the...

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1) 16 overview, 16.1 (293-298) A. Discuss the experiment performed by Frederick Griffith in 1928. How did Griffith’s results start a controversy among biologists? transformation B. How did Hershey and Chase show that DNA is the genetic material? Bacteriophage C. Discuss the lines of evidence that led to Watson and Crick’s ideas for the structure of DNA. X-ray crystallography Chargaff’s rules A) -Griffith tested a bacterium that caused pneumonia in mammals. -He used 2 types of bacteria: 1) pathogenic = harmful 2) unpathogenic = harmless -When he injected rats with live pathogenic bacteria, the rat would die. -When he injected rats with live unpathogenic bacteria, the rat would live. -But when he killed the Pathogenic bacteria with heat and injected it with live unpathogenic material, the rat would die. -Some cells became pathogenic and made more pathogenic cells. -Showed that pathogenic cells have a chemical component that unpathogenic cells do not have. -He called this
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This note was uploaded on 10/02/2011 for the course CHEM 210 taught by Professor Clay,m during the Summer '08 term at San Mateo Colleges.

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number1 - 1) 16 overview, 16.1 (293-298) A. Discuss the...

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