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                                    Given below is the representation of a certain event at a particular stage of a type of cell division. Which is this stage A. Prophase-I during meiosisB. Prophase -II during meiosisC. Prophase of mitosisD. Both prophase and metaphase of mitosis | 
                            
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Answer» Correct Answer - A During zygotene stage of prophase-I of meiosis-I, bivalent chromosomes clearly appear as tetrads. Pachytene stage is characterised by the appearance of recombination nodules, the sites at which crossing over (exchange of genetic material) occurs between non-sister chromatids of the homologous chromosomes.  | 
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