Double-stranded DNA enters the recipient cell during transformation. (True or false?)

Double-stranded DNA enters the recipient cell during transformation.
 
  Indicate whether this statement is true or false.

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Mutations are likely to persist after SOS repair, but not after light-induced or excision repair.
 
  Indicate whether this statement is true or false.

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DNA polymerase is able to proofread the DNA sequence.
 
  Indicate whether this statement is true or false.

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Each gene mutates at a characteristic frequency.
 
  Indicate whether this statement is true or false.

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Which is not true about a crown gall tumor?
 
  A. It is a bacterial infection of plants.
  B. It requires a plasmid.
  C. It produces a large amount of opines that neither the plant nor bacteria synthesizes.
  D. It is due to the incorporation of bacterial plasmid DNA into the plant chromosome.
  E. All of the choices are true.