Which of the Following Describes the Direction in Which Nucleotides

question 28

Multiple Choice

Which of the following describes the direction in which nucleotides are added onto a growing DNA strand during DNA replication in cells?

• A)in the 3' - 5' direction for the leading strand, and the 5' - 3' direction on the lagging strand
• B)in the 5' - 3' direction only
• C)in the 5' - 3' direction for the leading strand, and the 3' - 5' direction on the lagging strand
• D)in either the 5' - 3' direction or the 3' - 5' direction on both strands, depending on where replication begins

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