NTA Abhyas NEET2020BotanyCell Cycle and Cell DivisionPractice
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?
Options
- AThe formation of synaptonemal complex is seen during zygotene stage.
- BThe stage of pachytene is characterised by appearance of recombination nodules.
- CDiplotene stage is marked by terminalisation of chiasmata.
- DThe compaction of chromosomes continues throughout the leptotene.
Correct answer
C. Diplotene stage is marked by terminalisation of chiasmata.
Step-by-step 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.