Wi09 Homework 1

Wi09 Homework 1 - Genetics Homework #1 – Due in lecture...

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Unformatted text preview: Genetics Homework #1 – Due in lecture Wednesday, January 14 You must include your name, your Student ID, your TA’s name, and your section number at the top of your paper. You may type or write, as long as it is neat and legible. 1. A chemical called phenol (carbonic acid) destroys proteins but not nucleic acids, and strong alkali such as sodium hydroxide destroys both proteins and nucleic acids. In the Avery, MacLeod, and McCarty experiments with Streptococcus pneumoniae, what result would be expected if the S‐strain extract had been treated with phenol? If it had been treated with strong alkali? 2. What are the three principal structural differences between DNA and RNA? 3. Prior to the experiments of Avery, MacLeod, and McCarty and of Hershey and Chase, why did most biologists and biochemists believe that proteins were probably the genetic material? 4. What facts known prior to Avery, MacLeod, and McCarty’s experiment indirectly suggested that DNA might play a role in the genetic material? ...
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