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What is the main use of a reporter gene?

Answer and explanation

Correct answer: Providing a visible or measurable signal of gene expression or successful transformation

A reporter gene produces an easily visible or measurable signal, such as GFP fluorescence or colour development by lacZ. It is therefore used to detect or monitor gene expression or successful transformation. Cutting DNA is the role of a restriction enzyme, whereas antibiotic resistance is usually provided by a selectable marker. Exam tip: a reporter gene shows a signal, while a selectable marker helps in selection.

Related tags

Reporter GeneGene ExpressionTransformationGfpLaczSelectable MarkerCompetent HostPrinciples Of Biotechnology

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