Home Biology Biotechnology Principles and Processes All Topic Question For Revision Test Which of the following statement is not corr…
Biology Biotechnology Principles and Processes All Topic Question For Revision Test Single Correct MCQ
Published on: August 13, 2026

Which of the following statement is not correct about cloning vector?

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 single recognition site foe 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

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The correct answer is:
B

This statement is incorrect because a selectable marker is used to select transformants (cells that have taken up recombinant DNA), not non-transformants. Typically, it allows only transformed cells to survive (e.g., antibiotic resistance genes).

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