Q. If the lac operon of the genome of bacteria is always active it has a defect in which region of the operon?

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Q. Lac operon follows a trans-acting control mechanism.

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Q. According to the repressor of lac operon which of the following are false?

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Q. If there is an insertion mutation in the operator of the lac operon, the expression of the lac structural gene will be __________

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Q. The complete expression of the lac operon requires __________

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Q. What effect would a loss-of-function mutation have on the expression of the gene encoding the catabolite activator protein of the lac operon?

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Q. Mutation in the regulatory gene of a positively controlled operon can be identified by __________

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Q. In the case of lac operon, the gene expression is inhibited by __________

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Q. Which of the following is false about bacterial tryptophan operon?

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Q. Attenuator in the tryptophan operon is the __________

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Q. Enhancers that can function over very long distances known as ________________

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Q. Enhancers were first identified in __________

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Q. Enhancers in which of the following positions are unable to enhance the process of transcription?

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Q. Immunoglobulin enhancers are active in which of the following cell types?

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Q. Enhancers are a unit of multiple functional sequence elements that together regulates the expression of a gene.

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Q. The enhancers are gene specific regardless of the presence of insulators.

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Q. Transcriptional activators consist of __________ domains.

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Q. The activation domain of activators recruits transcriptional factors to proper sites on the DNA.

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Q. How many mechanisms are present to enhance transcription by the enhancer molecules?

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Q. Which of the following steps for the production of RNA is not regulated by enhancers?

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