The points at which crossing over has taken p | vedclass

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(C) During the $Prophase-I$ of meiosis,homologous chromosomes pair up to form bivalents or tetrads. Crossing over occurs between non-sister chromatids

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Chiasmata

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(C) During the $Prophase-I$ of meiosis,homologous chromosomes pair up to form bivalents or tetrads. Crossing over occurs between non-sister chromatids of homologous chromosomes at specific points. These $X$-shaped structures,where the exchange of genetic material has occurred,are known as $Chiasmata$. $Chiasmata$ are clearly visible during the $Diplotene$ stage of $Prophase-I$.

The points at which crossing over has taken place between homologous chromosomes are called

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