J

Jitendra Singh • 7.50K Points
Tutor III Biology

Q. Which of the following does not occur during Mitosis?

  • (A) condensation of the chromosomes
  • (B) breakdown of the nuclear membrane
  • (C) replication of the DNA
  • (D) spindle formation
  • Correct Answer - Option(C)
  • Views: 621
  • Filed under category Biology

Explanation by: Mr. Dubey

Replication of DNA occurs before mitosis, during the S phase (Synthesis phase) of the interphase, not during mitosis itself.

  • Mitosis involves the division of the nucleus and includes:
    • (A) Condensation of the chromosomes – Happens in prophase
    • (B) Breakdown of the nuclear membrane – Occurs in prometaphase
    • (D) Spindle formation – Happens in prophase and metaphase

Summary:

  • Interphase: DNA replication
  • Mitosis: Chromosome sorting and cell division

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