Q43 / 231 · NTA Abhyas (NEET) 2020 · Botany · Cell Cycle and Cell Division

Prophase of the first meiotic division is typically longer and complex. It is subdivided into 5 phases: leptotene, zygotene, pachytene, diplotene and diakinesis. Which of the following statements is not correct about these phases?

  • A
    The formation of synaptonemal complex is seen during zygotene stage.
  • B
    The stage of pachytene is characterised by appearance of recombination nodules.
  • Correct answer
    C
    Diplotene stage is marked by terminalisation of chiasmata.
  • D
    The compaction of chromosomes continues throughout the leptotene.

Solution

The final stage of meiotic prophase I is diakinesis. This is marked by terminalisation of chiasmata. During this phase, the chromosomes are fully condensed and the meiotic spindle is assembled to prepare the homologous chromosomes for separation.

Hence, the correct answer is option: 'C'.

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