What effect would you expect a gene expression of the lac operon work completely repressed?
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Explanation:
The cell would be more efficient without "wasting" the energy required for the low level of lacZ, lacY, and lacA gene expression
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➡️ These genes are transcribed as a single mRNA, under control of one promoter. Genes in the lac operon specify proteins that help the cell utilize lactose. lacZ encodes an enzyme that splits lactose into monosaccharides (single-unit sugars) that can be fed into glycolysis.
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