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Figure 2


Fig. 2. Electron micrographs of Arabidopsis meiocytes showing chromosomes at different stages of prophase I. (A-D) Wild type. (A) Interphase; (B) laptotene/zygotene, note most chromosomes are resolved away from and to one side of the nucleolus; (C) pachytene; (D) diplotene/diakinesis. (E-H) ask1-1. (E) Interphase; (F) zygotene, showing the close association of unsynapsed chromosome ends or rDNA with the nucleolus; (G) pachytene; (H) diplotene. Note the multiple attachment sites of chromatin to the nuclear envelope (small arrows) and the nucleolus (large arrows). Nu, nucleolus. Bar, 1 µm.





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