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Gene Regulation

Gene Regulation. No lactose, high glucose levels. Lac Operon. Repressor doesn’t bind and RNA polymerase makes mRNA. Lactose present, glucose needed. Lactose binds to repressor and changes its shape. Codes for enzyme lactase.

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Gene Regulation

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  1. Gene Regulation

  2. No lactose, high glucose levels Lac Operon Repressor doesn’t bind and RNA polymerase makes mRNA Lactose present, glucose needed Lactose binds to repressor and changes its shape Codes for enzyme lactase

  3. TATTA Box – eukaryotes, helps rna polymerase find the promoter

  4. RNA Interference - RNAi

  5. Introns produce microRNA (miRNA) = 20 bp long, • attaches to enzymes (Dicer) that destroy mRNA • Used to cure diseases: cancer, virus, Huntington’s….

  6. Hox genes – body plan

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