During DNA replication, which strand is synthesized continuously?

Practice Questions

Q1
During DNA replication, which strand is synthesized continuously?
  1. Lagging strand
  2. Leading strand
  3. Okazaki strand
  4. Template strand

Questions & Step-by-Step Solutions

During DNA replication, which strand is synthesized continuously?
  • Step 1: Understand that DNA replication involves two strands of DNA.
  • Step 2: Know that the two strands are called the leading strand and the lagging strand.
  • Step 3: The leading strand is the one that is made continuously.
  • Step 4: The leading strand is synthesized in the same direction as the replication fork opens.
  • Step 5: This means that as the DNA unwinds, the leading strand is built without interruption.
  • Leading Strand Synthesis – The leading strand is synthesized continuously in the same direction as the replication fork, allowing for a smooth and uninterrupted process.
  • Lagging Strand Synthesis – The lagging strand is synthesized discontinuously in short segments called Okazaki fragments, which are later joined together.
  • Direction of Synthesis – DNA strands are synthesized in the 5' to 3' direction, which is crucial for understanding the leading and lagging strand dynamics.
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