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NEET2017ZoologyBiotechnology - Principles and ProcessesActual

A gene whose expression helps to identify transformed cell is known as

Options

  1. ASelectable Marker
  2. BVector
  3. CPlasmid
  4. DStructural gene

Correct answer

A. Selectable Marker

Step-by-step solution

In recombinant DNA technology, selectable markers help in identifying and eliminating non-transformants and selectively permitting the growth of the transformants. In 1977, Bolivar and Rodriguez constructed the pBR322 plasmid vector. pBR322 is one of the most widely used E. coli cloning vectors. It contains ampicillin and tetracycline resistance genes that act as selectable markers.

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