Question:
What is PbR 322 and what its uses in biotechnology???what is selectable marker???
Answer:
pbr322 is the plasmid and widely used E.coli cloning vectors. It is named after discoverers p for plasmid, b for bolivar, r for Rodriguez.
It is used in biotechnology as vectors for cloning DNA in bacteria.
selectable marker is a gene introduced in the cell, especially a bacterium or to cells in a culture that confers a trait suitable for artificial selection.
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