MeSH definition : The three-part structure of ribbon-like proteinaceous material that serves to align
and join the paired homologous CHROMOSOMES. It is formed during the ZYGOTENE STAGE
of the first meiotic division. It is a prerequisite for CROSSING OVER.;
The three-part structure of ribbon-like proteinaceous material that serves to align
and join the paired homologous CHROMOSOMES. It is formed during the ZYGOTENE STAGE
of the first meiotic division. It is a prerequisite for CROSSING OVER.