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Which of the following is likely if there is a mutation in the lacY gene of the lac operon in E.coli?

1.	The lac genes would be expressed efficiently only in the absence of lactose.
2.	The lac genes would be expressed efficiently until the lactose supply in the cell is exhausted.
3.	The lac genes would be expressed continuously.
4.	Expression of the lac genes would cease immediately.

Subtopic: Gene Regulation: Introduction |

54%

Level 3: 35%-60%

NEET - 2018

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What catalyzes the peptide bond formation in prokaryotes?
1. Proteases
2. A ribozyme
3. Sigma subunit of RNA polymerase
4. Rho factor proteins

Subtopic: Gene Regulation: Introduction |

71%

Level 2: 60%+

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