Synaptonemal Complex

**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.

**Tree numbers:** - A11.284.430.106.279.345.190.160.830 - G04.144.220.220.687.883.250.500 - G04.144.220.220.781.906.250.500 - G05.113.220.687.883.250.500 - G05.113.220.781.906.250.500 - G05.360.160.830

**Synonyms:** - Synaptinemal Complex