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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Which of the following gene is constitutively expressed in E.coli?
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The correct answer is  Genes can be broadly divided into types based on their expression pattern: Constitutively expressed genes Regulated genes House-keeping genes Inducible/repressible Transcribed at a constant level Transcribed depending upon the environmental conditions Eg : Glycolytic enzymes Ribosomal RNA and proteins Eg : UDP-glucuronosyl transferase Lac I gene is constitutively regulated. Lac Z, Lac Y and Lac A genes are regulated by induction/repression.