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. This leaves single–stranded portions at the ends. There are overhanging stretches called sticky ends or cohesive ends on each strand. These are named so because they form hydrogen bonds with their complementary cut counterparts. This stickiness of the ends facilitates the action of the enzyme DNA ligase.
Identify the wrong statement with regard to restriction enzymes.
NEET UG 2020 — Zoology Biotechnology - Principles and Processes
2020mcqeasy
Identify the wrong statement with regard to restriction enzymes.
Official previous-year question
Held on 30 Apr 2020 · Verified 9 Jul 2026.
Options
- A
They cut the strand of DNA at palindromic sites.
- B
They are useful in genetic engineering.
- C
Sticky ends can be joined by using DNA ligases.
- D
Each restriction enzyme functions by inspecting the length of a DNA sequence.
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