Same chapter3 marksDifficulty: Medium
What is gel electrophoresis and what is it used for?
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3 marksDifficulty: Medium
What are restriction enzymes, and why are they called molecular scissors?
Original Khojo Papers practice question — not from a past board paper.
Answer
Restriction endonucleases are bacterial enzymes that recognise a specific palindromic sequence in double-stranded DNA and cut the backbone at a definite point within it. They are called molecular scissors because they let DNA be cut at chosen places, which is the first step in making a recombinant molecule.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
A staggered cut leaves sticky ends that pair with any fragment cut by the same enzyme.
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