Hind-II cuts DNA at a particular point by recognising a specific sequence of
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 6 bp
Option (1) 6 bp — Correct. NCERT gives six base pairs as the length of the recognition sequence of Hind II, the first restriction endonuclease to be isolated.
NCERT Extract:
Restriction Enzymes – “The first restriction endonuclease–Hind II, whose functioning depended on a specific DNA nucleotide sequence was isolated and characterised five years later. It was found that Hind II always cut DNA molecules at a particular point by recognising a specific sequence of six base pairs. This specific base sequence is known as the recognition sequence for Hind II.”