In which direction does DNA polymerase synthesize the new DNA strand during replication?

• A. Both directions simultaneously
• B. 3' to 5'
• C. 5' to 3'
• D. Random direction

Answer: (C)

Verified step by step guidance

1. Understand the role of DNA polymerase: DNA polymerase is an enzyme responsible for synthesizing new DNA strands during replication.
2. Recognize the directionality of DNA strands: DNA strands have directionality, characterized by a 5' (five prime) end and a 3' (three prime) end.
3. Identify the synthesis direction: DNA polymerase adds nucleotides to the 3' end of the growing DNA strand, meaning it synthesizes DNA in the 5' to 3' direction.
4. Consider the implications of directionality: The 5' to 3' synthesis direction is crucial for the replication process, ensuring that the new strand is complementary to the template strand.
5. Review the options given: Among the options provided, the correct direction for DNA polymerase synthesis is 5' to 3'.