The primary function of DNA ligase is to
A) cut the two strands of DNA molecule prior to replication.
B) attach free nucleotides to a growing chain.
C) remove bases that might have been inserted incorrectly.
D) seal any tiny gaps in the new DNA.
E) fragment old DNA that is no longer of use to the cell.

Question

Quizplus · Accepted Answer

The primary function of DNA ligase is to seal any tiny gaps that may exist in the newly synthesized DNA strand during replication. It does this by catalyzing the formation of a phosphodiester bond between the adjacent nucleotides, thus joining the fragments of DNA into a continuous strand.

The Primary Function of DNA Ligase Is to