Which of the following options gives the correct sequence of events during mitosis?

1) condensation→ nuclear membrane disassembly→ crossing over→ segregation→ telophase

2) condensation→ nuclear membrane disassembly→ arrangement at equator→ centromere division→ segregation→ telophase

3) condensation→ crossing over→ nuclear membrane disassembly→ segregation→ telophase

4) condensation→ arrangement at equator→ centromere division→ segregation→ telophase

Answer:2) condensation→ nuclear membrane disassembly→ arrangement at equator→ centromere division→ segregation→ telophase

Explanation: The correct sequence of stages during mitosis is:

  1. Prophase – condensation of chromosomes followed by nuclear membrane disassembly
  2. Metaphase – arrangement of the chromosome at the equator
  3. Anaphase – centromere division and segregation
  4. Telophase – formation of two daughter nuclei

Crossing over does not occur during mitosis.

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