Fig. 5

Electron microscopy morphometry of N. damascena chromosomes: chromosome condensation from interphase to metaphase. Left and central panels show ultrastructural organization (general view and fragment), right panels shows histograms depicting chromosome and chromatin fiber width distributions. a Interphase. b Preprophase. c Early prophase. d Late prophase. e Metaphase. The typical cross-sections of the chromosomes and/or chromatin fibrils are indicated with colored lines: red – interphase chromonemata (heterochromatin), green – chromonemata; blue – ‘300 nm fibers’; black – chromosomes. Scale bars: 1 μm