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In many species, chiasmata (the physical attachments between homologous chromosomes) are formed after the recognition of homologous chromosomes (pairing), the close association of paired chromosomes by the synaptonemal complex (SC), and the reciprocal exchange of sequences by the homologous recombination (HR) process. Where does crossing over occur? During meiosis, crossing-overRead More →

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Chiasmata is formed in the Diplotene phase of prophase 1. Note: In the prophase I of meiosis crossing over take place. The point at which the crossing over takes place is called the chiasmata. Where does crossing over occur chiasmata? Crossing over occurs between prophase I and metaphase I andRead More →