Multiple Choice
In the overview of DNA replication, which pair best describes the two key functions of DNA polymerase during replication?
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8. DNA Replication
Overview of DNA Replication
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During DNA replication, what is the primary role of DNA helicase?
A
It unwinds the DNA double helix by breaking hydrogen bonds between complementary base pairs at the replication fork.
B
It synthesizes short RNA primers to provide a 3′-OH group for DNA polymerase to begin elongation.
C
It joins Okazaki fragments together by sealing nicks in the sugar-phosphate backbone.
D
It adds nucleotides to the growing DNA strand in the 5′ to 3′ direction.
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