In which order The chromosome attach (Synaptonal complex)(With diagram)

The synaptonemal complex is a protein structure formed between two homologous chromosomes during meiosis. The synaptonemal complex mediates chromosome pairing or synapsis. During the Zygotene stage of prophase I of meiosis, the homologous chromosomes start pairing together by a process called synapsis to form a complex structure called synaptonemal complex. 


 

Synaptonemal complexes (SCs) are zipper-like protein structures that are formed between homologous chromosomes during the prophase of the first meiotic division. It stabilizes the pairing of homologous chromosomes (synapsis) and promotes crossing over. SCs are used to detect the abnormalities in pairing in case of individuals who are suffering from chromosomal abnormalities (either in chromosome number or structure). 
 

Hope this information will clear your doubts about the difference between bivalent and synaptonemal complex

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