Biology Biotechnology Principles and Processes All Topic Question For Revision Test Single Correct MCQ
Published on: August 13, 2026

A gene is said to be cloned if

A
the DNA sequence of the gene is known.
B
the function of the gene is known.
C
there is a DNA probe for the gene.
D
the gene has been isolated and copied.

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Text Solution

Verified by Experts
The correct answer is:
D

A gene is said to be cloned when it is:

Isolated from the organism, and

Copied (amplified) to produce multiple identical copies using a vector in a host cell.

Knowing sequence ≠ cloning

Knowing function ≠ cloning

Having a DNA probe ≠ cloning

Correct definition of gene cloning

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