At which State of meiosis crossing …
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Meghna Thapar 5 years, 3 months ago
Crossing over occurs between prophase I and metaphase I and is the process where two homologous non-sister chromatids pair up with each other and exchange different segments of genetic material to form two recombinant chromosome sister chromatids. Crossing over (recombination) occurs during pachytene. Recombination involves mutual exchange of the corresponding segments of non-sister chromatids of homologous chromosomes and produces variations. It takes place by breakage and reunion of chromatid segments.
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