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Molecular Basis Of Inheritance

Question
CBSEENBI12047109
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In operon concept, regulator gene functions as:

  • repressor

  • regulator

  • inhibitor

  • initiator

Solution

A.

repressor

Operon is defined as a set of genes transcribed under the control of an operator gene. It is a segment of DNA containing adjacent genes including structural genes, an operator gene, and a regulatory gene. An operon is thus a functional unit of transcription and genetic regulation. In operon model, regulator gene directs the synthesis of proteins. It may be an active repressor or an inactive repressor.

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