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. 2012 May 24;8(5):e1002730. doi: 10.1371/journal.pgen.1002730

Figure 8. In all RPM mutants, short chromosomes frequently remain unsynapsed when long chromosomes have finished synapsis.

Figure 8

Electron micrographs of silver-stained, spread, flattened meiotic prophase nuclei from (A) mps3-dAR (MCY1512XMCY1513) at t6, (B) mps3-dNT (MCY1401XMCY1407) at t8, (C) ndj1Δ mps3-dAR (MCY1510XMCY1511) at t8 and (D) csm4Δ (MCY1536XMCY1539) at t8. Electron-dense lines are the silver-stained chromosome axes which, when aligned in pairs at uniform spacing, mark completed synapsis to form synaptonemal complexes. Long arrows indicate synapsed long chromosomes and short arrows indicate unsynapsed short chromosome axes. Nucleoli are indicated by “nll.” Polycomplexes, which are commonly found in nuclei that are delayed in synapsis, are indicated by “pc.”