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Gene Expression

Learn about the first step of gene expression - transcription. DNA serves as a template to create RNA with the help of RNA polymerase. Discover how this process occurs and why it is crucial for protein synthesis. Understand the structure and function of RNA, including the removal of introns and retention of exons to form mature mRNA.

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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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