CBSE · Class 12 · Biology · Biotechnology: Principles and ProcessesWhat is plasmid DNA?
Step-by-Step Solution
Plasmid DNA refers to extra-chromosomal, circular, double-stranded DNA molecules that naturally occur in many bacteria and some yeasts. These molecules replicate independently of the chromosomal DNA and frequently carry advantageous genes, such as antibiotic resistance markers. In recombinant DNA technology, modified plasmids are widely utilized as primary cloning vectors to transport and replicate foreign genes inside suitable host organisms efficiently.
💡 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.