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

  • Option 1)

    Condensation \rightarrow nuclear membrane disassembly \rightarrow crossing over \rightarrow segregation \rightarrow telophase

  • Option 2)

    Condensation \rightarrow nuclear membrane disassembly \rightarrow  arrangement at equator \rightarrow centromere division \rightarrow segregation \rightarrow  telophase

  • Option 3)

    Condensation \rightarrow crossing over \rightarrow nuclear membrane disassembly \rightarrow segregation \rightarrow telophase

  • Option 4)

    Condensation \rightarrow arrangement at equator \rightarrow centromere division \rightarrow segregation \rightarrow telophase

 

Answers (1)

 

Prophase -

Prophase is first stage of mitosis, marked by the initiation of condensation of chromosomal material, to form compact mitotic chromosomes. Mitotic spindle appears at the end of this phase , do not show golgi body, ER, nucleus.

 

- wherein

Condensation (chromosomes become uisible) \rightarrow Nuclear membrane

Disassembly (Late prophase) \rightarrowArrangement of equator

(Metaphase) \rightarrow Centromere diuision (Anaphase) \rightarrow Segregation \rightarrow Telophase

 


Option 1)

Condensation \rightarrow nuclear membrane disassembly \rightarrow crossing over \rightarrow segregation \rightarrow telophase

This is incorrect option

Option 2)

Condensation \rightarrow nuclear membrane disassembly \rightarrow  arrangement at equator \rightarrow centromere division \rightarrow segregation \rightarrow  telophase

This is correct option

Option 3)

Condensation \rightarrow crossing over \rightarrow nuclear membrane disassembly \rightarrow segregation \rightarrow telophase

This is incorrect option

Option 4)

Condensation \rightarrow arrangement at equator \rightarrow centromere division \rightarrow segregation \rightarrow telophase

This is incorrect option

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