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Cosmid Vector

pBR322, which...

Question

pBR322, which is frequently used as a vector for cloning gene in E. coli is a/an

A

Original bacterial plasmid

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B

Modified bacterial plasmid

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C

Viral genome

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D

Transposon

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Solution

The correct option is B Modified bacterial plasmid
pBR322 is a plasmid and was one of the first widely used E.coli cloning vectors. It is a modified bacterial plasmid, created in 1977. It contains tetracycline and ampicillin antibiotic resistant gene which allows the bacteria to grow in particular antibiotic-containing medium.

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