Which of these feature marks diplotene stage of cell cycle?

Question

Which of these feature marks diplotene stage of cell cycle? (A) Separation of synapsed homologous chromosomes except at the site of crossovers. (B) Degeneration of nucleolus. (C) Chiasmata shift towards chromosome ends. (D) All of the above.

Tardigrade Admin · Accepted Answer

The beginning of diplotene stage is marked by chiasmata formation. The chiasmata formation is the indication of crossing over and the beginning of separation of chromosome. The chiasmata formation is associated with the process of terminalisation.

Q. Which of these feature marks diplotene stage of cell cycle?

Separation of synapsed homologous chromosomes except at the site of crossovers.

Degeneration of nucleolus.

Chiasmata shift towards chromosome ends.

All of the above.

The beginning of diplotene stage is marked by chiasmata formation. The chiasmata formation is the indication of crossing over and the beginning of separation of chromosome. The chiasmata formation is associated with the process of terminalisation.