The number of chiasmata depends on what?

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(A) Chiasmata are the $X$-shaped structures formed between non-sister chromatids of homologous chromosomes during the $pachytene$ stage of $prophase-I

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Length of the chromosome

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(A) Chiasmata are the $X$-shaped structures formed between non-sister chromatids of homologous chromosomes during the $pachytene$ stage of $prophase-I$ of $meiosis$. These structures represent the sites where crossing over has occurred. The number of chiasmata is directly proportional to the length of the chromosome, as longer chromosomes provide more space and opportunities for genetic recombination events to occur.

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