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The enzyme recombinase is required at which stage of meiosis:

1. Pachytene
2. Zygotene
3. Diplotene
4. Diakinesis

Correct answer: Pachytene

Solution

Recombinase is involved in homologous recombination, which occurs during pachytene of prophase I when crossing over takes place. This is the stage after synapsis is established and before homologs begin to separate.

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