(B) selectable marker is a gene that facilitates the selection of transformants (cells that have taken up the recombinant vector) by eliminating non-t

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Selectable marker selectively permitting the growth of the non-transformants.

(B) selectable marker is a gene that facilitates the selection of transformants (cells that have taken up the recombinant vector) by eliminating non-transformants. Option $B$ is incorrect because a selectable marker permits the growth of transformants,not non-transformants.

Class 12 Biology Biotechnology Principals and Process Tools of recombinant DNA technology

Medium

Which of the following statements is not correct about a cloning vector?

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A
$Ori$ is a sequence responsible for controlling the copy number of the linked $DNA$.
B
Selectable marker selectively permitting the growth of the non-transformants.
C
In order to link the alien $DNA$,the vector needs to have a single recognition site for the commonly used restriction enzymes.
D
The ligation of alien $DNA$ is carried out at a restriction site present in one of the two antibiotic resistance genes.