Movie S1.

3D model of the synapsed chromosome axis. A model of the synapsed chromosome axis in three dimensions was constructed by combining the localizations of domains determined by STORM (position from midline in x and HWHM in z) and prior information about their interactions (structure of cohesin complexes from refs. 53–56; interactions of HORMA-domain proteins from ref. 16). The model is rendered using Pov-Ray 3.7.