In synapsis, the genes on the chromatids of the homologous chromosomes are aligned precisely with each other. The synaptonemal complex supports the exchange of chromosomal segments between non-sister homologous chromatids, a process called crossing over.
During meiosis, an event called chromosomal crossing over from time to time occurs as a part of recombination. In this procedure, a place of 1 chromosome is exchanged for the vicinity of every other chromosome, thereby generating precise chromosomal mixtures that divide into haploid daughter cells.
Subsequently, the pairs of homologous chromosomes in anaphase I separate into extraordinary daughter cells. Earlier than the pairs can separate, the crossovers between chromosomes must be resolved and meiosis-unique cohesins need to be launched from the arms of the sister chromatids.
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