Answer: Size (smaller fragments travel farther).
- A Color visible under UV illumination
- B Size (smaller fragments travel farther)
- C Charge alone, independent of fragment size
- D Shape alone, independent of molecular weight
Correct answer: B. Size (smaller fragments travel farther)
Explanation: In gel electrophoresis, DNA fragments migrate through agarose gel in an electric field. Smaller fragments travel faster and farther.
Recombinant DNA technology: a gene of interest and plasmid are cut by the same restriction enzyme, ligated into a recombinant plasmid, and introduced into a host cell.
Concept context
Recombinant DNA, GMOs, PCR, CRISPR, and biotechnology applications. Growing importance in NEET.
Read the full Biotechnology: Principles and Processes notes →