NEET 2022
- Exam
- NEET
- Year
- 2022
- Subject
- Botany
- Chapter
- Cell Cycle and Cell Division
NEET 2022 · Botany · Cell Cycle and Cell Division
The appearance of recombination nodules on homologous chromosomes...
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.