Chiasmata formation occurs during

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(A) During the $Meiosis-I$ prophase,the $Diplotene$ stage is characterized by the dissolution of the synaptonemal complex. The homologous chromosomes

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Diplotene

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(A) During the $Meiosis-I$ prophase,the $Diplotene$ stage is characterized by the dissolution of the synaptonemal complex. The homologous chromosomes of the bivalents start to separate from each other except at the sites of crossovers. These $X$-shaped structures are called $Chiasmata$. Therefore,the formation and visibility of chiasmata occur during the $Diplotene$ stage.

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