The appearance of recombination nodules on ho | vedclass

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(B) During the $pachytene$ stage of $prophase-I$ in meiosis,the phenomenon of crossing over takes place.Recombination nodules are protein complexes th

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Sites at which crossing over occurs

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(B) During the $pachytene$ stage of $prophase-I$ in meiosis,the phenomenon of crossing over takes place.Recombination nodules are protein complexes that appear on the synaptonemal complex at the sites where crossing over occurs.These nodules facilitate the exchange of genetic material between non-sister chromatids of homologous chromosomes.Therefore,the appearance of recombination nodules characterizes the sites at which crossing over occurs.

The appearance of recombination nodules on homologous chromosomes during meiosis characterizes:

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