Very Short Answer Question: Why are Okazaki fragments formed on lagging strand only? - Biology

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Short Note

Very Short Answer Question:

Why are Okazaki fragments formed on lagging strand only?

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Solution

  1. The two strands in DNA are antiparallel i.e. one strand runs in 5’ → 3’ direction whereas the other runs in 3’ → 5’.
  2. The DNA polymerase synthesizes a new DNA strand in 5’ → 3’ direction only.
  3. Leading template is synthesized continuously and lagging template is synthesized discontinuously.
  4. Due to 5’ → 3’ polymerizing activity of DNA polymerase Okazaki fragments are formed only on lagging strand only.
Concept: DNA Replication
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Chapter 4: Molecular Basis of Inheritance - Exercises [Page 92]

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Balbharati Biology 12th Standard HSC for Maharashtra State Board
Chapter 4 Molecular Basis of Inheritance
Exercises | Q 2.5 | Page 92

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