abnormal meiosis abnormal chromosomal synapsis abnormal chromosomal pairing abnormal meiotic chromosome synapsis MPheno.ontology abnormal chromosome pairing during meiosis MP:0009451 GO:0007129 abnormal chromosome pairing any anomaly in the meiotic cell cycle process where side by side pairing and physical juxtaposition of homologous chromosomes is created during prophase I of meiosis; synapsis begins when the chromosome arms begin to pair from the clustered telomeres and ends when synaptonemal complex or linear element assembly is complete abnormal homologous chromosome pairing at meiosis abnormal chromosomal syndesis