Replication

AP Biology· difficulty 2/5

DNA polymerase adds nucleotides to the

A
$Either end at random$
B
$Middle of the strand$
C
$3' end of the new strand$
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D
$5' end of the new strand$

Explanation

Synthesis is always 5'\to3'; nucleotides are added to the free 3'-OH of the growing strand.

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