Transcription
Which of the following statement defines a replicon?

The enzyme responsible for transposition
A DNA molecule that encodes pili for conjugation
A DNA template which is used in transcription
A DNA molecule that is able to replicate and be maintained

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Transcription
The sigma factor

provides the catalytic function of cleaving off pyrophosphates during mRNA synthesis
recognizes the promotor
accomplishes DNA restriction
is responsible for recognizing the termination sequence

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