PCR, Restriction Enzymes & Chitinase — NEET Biology
📚 Practice ConceptExplain briefly (a) PCR (b) Restriction enzymes and DNA (c) Chitinase
Assertion (A): Restriction enzymes create staggered cuts in DNA. Reason (R): Restriction enzymes cut exactly at the center of palindromic recognition sequences.
View solution & NCERT explanation
Correct answer: C — If assertion is true but reason is false.
NCERT confirms restriction enzymes create staggered cuts producing sticky ends, making the Assertion true. However, NCERT explicitly states “Restriction enzymes cut the strand of DNA a little away from the centre of the palindrome sites, but between the same two bases on the opposite strands.” The Reason falsely claims cutting at exact center - cutting away from center creates the staggered ends.
What does NCERT say about Explain briefly PCR b?
Has this concept appeared in NEET?
Which chapter is this from?
Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.
176/180MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.