NEET2022BotanyCell Cycle and Cell DivisionActual
The appearance of recombination nodules on homologous chromosomes during meiosis characterizes:
Options
- ABivalent
- BSites at which crossing over occurs
- CTerminalization
- DSynaptonemal complex
Correct answer
B. Sites at which crossing over occurs
Step-by-step solution
Prophase I in meiosis-I is divided into 5 subphases: In Pachytene there is recombination of chromosomes. This is accomplished by the formation of recombination nodule. There is chiasmata formation in Diplotene which depicts the past recombination event. Terminalisation takes place of chiasmata.