Question

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

• A. condensation $\to$ nuclear membrane disassembly $\to$ crossing over $\to$segregation $\to$ telophase
• B. condensation $\to$ nuclear membrane disassembly $\to$arrangement at equator$\to$centromere division $\to$segregation $\to$ telophase
• C. condensation $\to$ crossing over $\to$ nuclear membrane disassembly $\to$segregation $\to$ telophase
• D. condensation $\to$ arrangement at equator$\to$centromere division $\to$segregation $\to$ telophase

Answer 1

The correct option is B condensation $\to$ nuclear membrane disassembly $\to$arrangement at equator$\to$centromere division $\to$segregation $\to$ telophase

Mitosis is a type of cell division that occurs during growth and repair. It is divided into the following four stages:

1. Prophase: Chromosome materials condense and the nuclear membrane disassembles at the end.
2. Metaphase: Chromosomes move to the equator and get
   aligned along metaphase plate through spindle fibres
   to both poles.
3. Anaphase: Centromeres split, chromatids separate and move to opposite poles of the cell (segregation).
4. Telophase: Nuclear envelope reassembles.

The correct sequence would be: condensation $\to$ nuclear membrane disassembly $\to$arrangement at equator $\to$centromere division $\to$segregation $\to$ telophase