Genetic recombination occurs in ................ phase of prophase of meiosis I.
A
Leptotene
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B
Zygotene
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C
Pachytene
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D
Diplotene
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Solution
The correct option is C Pachytene During the pachytene stage, bivalent chromosome now clearly appears as tetrads. This stage is characterized by the appearance of recombination nodules, the sites at which crossing over between non-sister chromatids of the homologous chromosome. And then crossing over takes place.