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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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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
TATTA Box – eukaryotes, helps rna polymerase find the promoter
Introns produce microRNA (miRNA) = 20 bp long, • attaches to enzymes (Dicer) that destroy mRNA • Used to cure diseases: cancer, virus, Huntington’s….