Multiple Choice
During DNA replication, which enzyme is primarily responsible for unwinding ("unzipping") the DNA double helix at the replication fork?
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8. DNA Replication
Overview of DNA Replication
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In the overview of DNA replication, what is the primary role of helicase at the replication fork?
A
It adds nucleotides to the growing DNA strand in the to direction.
B
It joins Okazaki fragments by forming phosphodiester bonds between adjacent DNA segments.
C
It unwinds the parental double helix by breaking hydrogen bonds between complementary bases.
D
It synthesizes short RNA primers to initiate DNA synthesis on each template strand.
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