Question

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

(a) Condensation → nuclear membrane disassembly → crossing over → segregation → telophase

(b) Condensation → nuclear membrane disassembly → arrangement at equator → centromere division → segregation → telophase

(c) Condpnsation → crossing over → nuclear membrane disassembly → segregation → telophase

(d) Condensation → anangement at equator → centromere division → segregation → telophase

Answer 1

Correct option (b) Condensation → nuclear membrane disassembly → arrangement at equator → centromere division → segregation → telophase

Explanation :

During mitosis following events occurs as follows.

Condensation of chromosomal material, which takes place at an early prophase stage. During late prophase nuclear membrane disintegrates.

Then chromosomes get arranged at equator in the metaphase stage. After that splitting of centromere and segregation of chromosomes occur in the anaphase stage. In telophase stage chromosomes move to opposite poles of the cell. lt is last stage of mitosis.