What is the role of the enzyme ligase in DNA replication?

A. It seals any breaks in the sugar-phosphate backbone.
B. It breaks the hydrogen bonds that hold the two strands of the DNA together.
C. It unzips the double-stranded DNA.
D. It matches new bases to the old strand by complementary base pairing.
E. It folds the DNA into a coiled structure.


Answer: A

Biology & Microbiology

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