NEETBotanyCell Cycle and Cell Division
What is the name of the enzyme involved in the exchange of genetic material between two homologous chromosomes during crossing over?
Options
- ARecombinase
- BSynaptonemal complex
- CTetrads
- DChromosomal compaction
Correct answer
A. Recombinase
Step-by-step solution
This stage is characterised by the appearance of recombination nodules, the sites at which crossing over occurs between non-sister chromatids of the homologous chromosomes. Crossing over is the exchange of genetic material between two homologous chromosomes. Crossing over is also an enzyme-mediated process and the enzyme involved is called recombinase. Crossing over leads to recombination of genetic material on the two chromosomes. Recombination between homologous chromosomes is completed by the end of pachytene, l