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Steps of Transcription

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Presentation on theme: "Steps of Transcription"— Presentation transcript:

1 Steps of Transcription

2 Learning Objectives Describe the steps of DNA transcription

3 Central Dogma DNA Transcription RNA Translation Protein (Nucleus)
(Cytoplasm) DNA Transcription RNA Translation Protein

4 RNA Polymerase RNA polymerase – an enzyme that makes a strand of messenger RNA.

5 Steps of Transcription (occurs in the nucleus)
Initiation Elongation Termination

6 Step 1: Initiation DNA unwinding and unzipping along base pairs RNA polymerase finds the DNA and unwinds/unzips the DNA strands.

7 Step 2: Elongation mRNA forming Free bases RNA polymerase uses one strand of DNA as a template to assemble free nucleotides into mRNA. C G A U

8 Step 3: Termination Newly synthesized mRNA strand is released from DNA template. The mRNA leaves the nucleus and enters the cytoplasm. DNA re-zips and re-twists.

9 YouTube Video DNA Transcription

10 Stop Here

11 The Amoeba Sisters RNA vs. DNA
YouTube Video The Amoeba Sisters RNA vs. DNA

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