Fig. 4. Meiotic time-course experiment in the meu13 mutant. The morphologies of linear elements and the temporal comparison of cytological events were analyzed in a time-course of strain ED8. (A) Electron micrograph of an early class IIb nucleus. Arrowheads indicate short bundles; the arrow points to the spindle pole body; `n' is the nucleolus. (B) Two class II nuclei representing networks. The nucleus on the right-hand side shows a transition of the network to the bundle phenotype. (C) Bundles in a late class IIb nucleus. (D) Class III nucleus with single, long elements. Bars, 1 µm. (E) Quantitation and temporal comparison of the different classes. (F) Meiotic time-course as followed by DAPI staining.

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