CBSE · Class 12 · Biology · Biotechnology: Principles and ProcessesWhat are selectable markers?
Step-by-Step Solution
Selectable markers are specific genes incorporated into cloning vectors that help distinguish successfully transformed host cells from untransformed cells. Typically conferring resistance to particular antibiotics such as ampicillin, tetracycline, or kanamycin, these markers ensure that only cells harboring the recombinant plasmid can survive when grown on a selective nutrient medium. This makes the screening and selection process in genetic engineering highly efficient and reliable.
💡 Study Guide: This question tests core syllabus concepts from Biotechnology: Principles and Processes. For formulas, key summaries, and mock exam reference guides, read the full Biotechnology: Principles and Processes Revision Notes.