Replication

AP Biology· difficulty 2/5

Helicase functions during replication by

A
$Unwinding the DNA double helix at the replication fork$
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B
$Synthesizing short RNA primers to initiate strand synthesis$
C
$Adding new nucleotides to the 3' end of the growing strand$
D
$Joining Okazaki fragments through phosphodiester bonds$

Explanation

Helicase breaks H-bonds between base pairs, separating strands so each can serve as a template.

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