Multiple Choice
In DNA replication, which enzyme builds (synthesizes) new DNA strands by adding nucleotides to the growing chain?
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8. DNA Replication
Overview of DNA Replication
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In an overview of DNA replication, what is the direct result of DNA ligase activity on the newly synthesized DNA strand?
A
It synthesizes RNA primers needed to initiate DNA synthesis on the lagging strand.
B
It adds nucleotides to the 3′ end of a growing DNA strand using a DNA template.
C
It unwinds the parental DNA double helix ahead of the replication fork.
D
It seals nicks in the sugar-phosphate backbone by forming phosphodiester bonds, joining Okazaki fragments into a continuous strand.
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