Synaptic configuration of the rye chromosome pair in cells at mid zygotene (MZ), late zygotene (LZ) and pachytene (P) in different lines.

<p><b>A, D, G, J</b>) DAPI image of each nucleus. <b>B, E, H, K</b>) Arrangement of telomeres labeled with probe pAt74 (green) and of the rye bivalent hybridized with probes, pUCM600, pAWRC.1, pSc74 (red) present in each nucleus. <b>C, F, I, L</b>) Schematic representation of the two rye homologues that synapse in each bivalent. <b>B, C</b>) 1RL and 1RL_inv show antiparallel arrangement and synapsis at both ends. <b>E, F</b>) Synapsis of the 1R_inv-1R_inv pair involves 1RS and the proximal region of 1RL_inv including the proximal chromomere. <b>H, I</b>) Chromosomes 1R and 1R_inv show complete homologous synapsis. <b>K, L</b>) Chromosomes 1R and 1R_inv underwent homologous synapsis of the short arm and non-homologous synapsis of the long arm. Bar represents 10 µm.