Figure 3.

Electron Micrograph Showing Late Nodules on SCs.

Electron micrograph of a portion of a spread of SCs from maize primary microsporocytes in pachytene showing bivalents 4, 8, and part of 5 (left) and higher magnification views (right) of SC segments with RNs (labeled with arrowheads and the same lowercase letters at the two magnifications). Each SC has been identified based on its relative length and arm ratio, and in this set, the kinetochores (K) of bivalents 4 and 8 are fused together. A halo of dispersed chromatin is visible around each SC. Bar = 5 μm (left). Magnification for the right column is 2.5 times higher.