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Homework Help: Genetics: Bacterial Genetics and Specialized Transduction

  1. Jun 11, 2008 #1
    1. The problem statement, all variables and given/known data

    Compare and contrast the transfer of the F factor and the lambda phage during conjugation under the following conditions:

    a) Hfr([tex]\lambda[/tex]) x F-
    b) Hfr x F- ([tex]\lambda[/tex])
    c) Hfr([tex]\lambda[/tex]) x F-([tex]\lambda[/tex])

    3. The attempt at a solution

    a) Hfr infects F- which is non-immune --> lysis occurs

    c) Hfr tries to infect F- with lambda already inserted: immune---> no lysis

    The transfer where F- already has lambda inserted I'm not sure of what happens. The other two are textbook. My guess would be that Hfr infects F- and excises phage lambda out of the F- which would be non-immune but I don't think lysis would occur.

    Any help or guidance would be appreciated.
  2. jcsd
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