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What is the basic definition of a competent host?

Answer and explanation

Correct answer: A cell that can take up external DNA

In recombinant DNA work, a competent host is a cell that has been made capable, naturally or artificially, of taking up foreign or external DNA from its surroundings. Option A is correct. After uptake, the DNA may be maintained as a plasmid or incorporated into the host genome, and the resulting event is commonly called transformation. Chemical treatment or electroporation can increase competence in laboratory cells. A competent host is not an enzyme, pigment, or mineral: those substances have different biological roles and cannot serve as living recipient cells for recombinant DNA.

Related tags

Competent HostDna UptakeTransformationRecombinant DnaPrinciples Of BiotechnologyBiotechnologyClass 11 Mcq

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