Q. Restriction endonucleases are enzymes which
A) Remove nucleotides from the ends of the DNA molecule
B) Make cuts at specific positions within the DNA molecule
C) Recognize a specific nucleotide sequence for binding of DNA ligase
D) Restrict the action of the enzyme DNA polymerase
Explanation
[Solution from source] Restriction endonucleases recognise a specific palindromic sequence and cut the DNA at specific positions within the molecule. Removing nucleotides from the ends is what exonucleases do. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.