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Gene Expression

Gene Expression. STEP 1: Transcription. Step 1 = Transcription = DNA acts as template to make RNA Enzyme - RNA polymerase - reads DNA, binds at promoter - separates DNA strands - reads one side of DNA (template strand) - adds complementary RNA nucleotides.

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Gene Expression

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  1. Gene Expression

  2. STEP 1: Transcription • Step 1 = Transcription = DNA acts as template to make RNA • Enzyme - RNA polymerase - reads DNA, binds at promoter - separates DNA strands - reads one side of DNA (template strand) - adds complementary RNA nucleotides

  3. Transcription

  4. So, transcription from DNA to RNA: template of DNA: T A C G A T A C T RNA: • Where? • Because?

  5. RNA - made of introns and exons - introns – cut out - exons – remaining pieces; final mRNA

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