Topic: Cell cycle, mitosis, meiosis· Cell Structure and Function

The process of appearance of recombination nodules occurs at which sub stage of prophase I in meiosis?

1. Diakinesis

2. Zygotene

3. Pachytene

4. Diplotene

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Answer: 3. Pachytene

Key idea: Recombination nodules appear during pachytene, when crossing over takes place between non-sister chromatids of homologous chromosomes.

Crossing over is catalysed by recombinase enzymes at these nodules. Synapsis happens in zygotene, and chiasmata become visible in diplotene.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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The process of appearance of recombination nodules occurs at which sub stage of prophase I in meiosis?

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