Recombinosome and SC morphogenesis in S. macrospora. (A) Progression of total recombinational interactions as manifested in RNs (ENs, LNs, and non–nodule-marked interactions) and two types of Hei10 foci (T2 and T3) in relation to final DNA outcome. (B) CoC relationships and the number and distribution of events along bivalents (Biv) 1 and 2 for Hei10-T3 foci and LNs, both of which mark the sites of COs/chiasmata. (C) CoC relationships and the number and distribution of events for Hei10-T2 foci and total RNs (ENs + LNs), both of which correspond to the sites of SC nucleation events (Results). (D) Hypothesis for integrated arrays of SC nucleation sites (stripes), LN/CO sites (red circles), EN sites (blue circles), and non–nodule-marked sites (brown bars). B and C reprinted with permission from ref. 8.