A ladderlike series of parallel threads visible in electron microscopy adjacent to and coaxial with pairing chromosomes in meiosis.
- The nucleus reorganizes during this time, as sister chromosomes pair and the synaptonemal complex forms.
- In the absence of recombination, it has been suggested that the synaptonemal complex may assume this role in some organisms.
- The synaptonemal complex is present at this stage, and meiotic recombination is completed within this context.
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