NEET · BiologyMedium
During which stage of meiosis does the phenomenon of crossing over occur, and what is the specific enzyme complex involved?
- A.Zygotene, Recombinase
- B.Pachytene, Recombinase
- C.Diplotene, Ligase
- D.Pachytene, Polymerase
Show correct answer & step-by-step solution
Correct answer: B — Pachytene, Recombinase
Solution
- Crossing over is the exchange of genetic material between non-sister chromatids.
- This process occurs during the pachytene sub-stage of prophase I.
- The enzyme responsible for catalyzing this exchange is recombinase.
- Hence the answer is (B).
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