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An operon is defined as __________

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An operon is defined as __________

(a) A related set of genes each having different promoters and are present differently

(b) A set of genes which are present together but are controlled by different promoters

(c) A set of genes which are present together and are controlled by the same promoter

(d) A set of genes which are not present together but controlled by the same promoter

The question was posed to me during an internship interview.

This intriguing question comes from Cloning using a Simple Plasmid and Alpha Complementation in chapter Simple Cloning of Genetic Engineering

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Right choice is (c) A set of genes which are present together and are controlled by the same promoter

Best explanation: An operon is defined as the cluster of genes which are present together and are controlled by the same promoter. An example is lac operon. It consists of three subunits, alpha, beta and omega.

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