Identify the correctly matched pair.

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(C) $1$. Leptotene: Chromosomes become visible and compact. Synapsis occurs during Zygotene.$2$. Zygotene: Pairing of homologous chromosomes (synapsis

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Pachytene - Crossing over of genes occurs at the site of chiasmata

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(C) $1$. Leptotene: Chromosomes become visible and compact. Synapsis occurs during Zygotene.$2$. Zygotene: Pairing of homologous chromosomes (synapsis) occurs. Recombination nodules appear during Pachytene.$3$. Pachytene: Crossing over occurs between non-sister chromatids of homologous chromosomes at the site of chiasmata.$4$. Diakinesis: This is the final stage of meiotic prophase-$I$,characterized by the termination of chiasmata and the disappearance of the nucleolus and nuclear envelope.

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