A selectable marker is used to

Biology Biotechnology Principles and Processes Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 21, 2026

help in eliminating the non-transformants, so that the transformants can be regenerated

identify the gene for a desired trait in an alien organism

select a suitable vector for transformation in a specific crop

mark a gene on a chromosome for isolation using restriction enzyme

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A selectable marker (like antibiotic resistance) allows researchers to kill cells that did not take up the recombinant DNA, so only transformants survive for further use.

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