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Which vector example is linked with bacterial plasmid cloning?

Answer and explanation

Correct answer: pBR322

The governing concept is the use of bacterial plasmids as cloning vectors. pBR322 is a well-known engineered plasmid vector used in Escherichia coli. It contains an origin of replication and selectable marker genes, historically including genes associated with resistance to ampicillin and tetracycline, allowing maintenance and selection of cells carrying the plasmid. Therefore option A is correct: pBR322 is directly associated with bacterial plasmid cloning. A Ti plasmid is primarily associated with gene transfer in plant biotechnology and is not the expected classic bacterial plasmid-cloning example in this question. Hemoglobin and chlorophyll are biological molecules, not plasmid vectors, so options C and D are unsuitable.

Related tags

Pbr322Bacterial PlasmidCloning VectorCloning VectorsPrinciples Of BiotechnologyBiotechnologyClass 11 Mcq

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