The term ‘endonuclease’ refers to cutting the DNA sequence from ______________.
A. only within the polynucleotide chain, not at the ends
B. the ends of the chain
C. anywhere in the chain
D. exactly in the middle of the chain
Explanation: The cleavage is done within the polynucleotide chain and not at the ends. The enzyme which cuts the sequence at the ends is known as exonuclease.