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What are the 3 steps of transcription in order?

Question

What are the 3 steps of transcription in order?

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Solution

The three steps of transcription are:

  1. Initiation: This is the beginning of transcription. The enzyme RNA polymerase binds to a specific region in the DNA called the promoter region. This signals the DNA to unwind so the enzyme can 'read' the bases in one of the DNA strands.

  2. Elongation: The RNA polymerase traverses the DNA template stand and synthesizes a complementary RNA molecule, matching the DNA sequence (with the exception of swapping uracil for thymine).

  3. Termination: Once a gene is fully transcribed, the RNA polymerase molecule encounters a sequence of DNA known as a termination signal. It then detaches from the DNA, marking the end of transcription. The RNA molecule undergoes some modifications and processing before it is ready to be translated into a protein.

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