In an overview of DNA replication, new DNA strands are synthesized in which direction relative to the growing strand?

• A. 5′ to 3′ (nucleotides are added to the 3′ end)
• B. Replication proceeds from the middle of the chromosome toward both ends without a defined 5′/3′ direction
• C. 3′ to 5′ (nucleotides are added to the 5′ end)
• D. Both 5′ to 3′ and 3′ to 5′ on the same strand simultaneously

Answer: (A)