von Wettstein D
Proc Natl Acad Sci U S A. 1971 Apr;68(4):851-5. doi: 10.1073/pnas.68.4.851.
The synaptinemal complex provides a structural basis for four-strand crossing over: prior to chromosome pairing, both sister chromatids of each homologous chromosome participate in the genesis of one lateral component. During precise pairing, the two lateral components are combined into one synaptinemal complex per bivalent.
在染色体配对之前,每条同源染色体的两条姐妹染色单体都参与一个侧成分的形成。在精确配对过程中,两个侧成分结合形成每个二价体的一个联会复合体。