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Genes that are involved in turning on or off the transcription of a set of structural genes are called

1. Operator genes
2. Redundant genes
3. Regulator genes
4. Polymorphic genes

Correct answer: Regulator genes

Solution

Regulator genes produce products that control the transcription of other genes, especially structural genes in an operon or gene network. They act as switches or modulators rather than encoding the structural proteins themselves.

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