Mitotic abnormalities following ZnO NPs treatment in Allium cepa seeds. Magnification power 540x. A. binucleated cell at interphase B. Irregular prophase C. sticky prophase D. sticky metaphase E. disturbed metaphase F. anaphase with multiple bridges and forward chromosome. G. multipolar anaphase H. sticky anaphase with single bridge I. sticky anaphase J. telophase with forward chromosome K. sticky diagonal telophase L. micronucleus at interphase  

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... when treated with ZnO NPs, chromosomal aberrations was highest when treated for 6hours with all concentrations of treatments. In Table 2 and Table 3 are showing that, ZnO bulk and ZnO NP induced different types of mitotic abnormal cells in the root tip of Allium cepa seeds. Some of these types are represented in Fig. 9 and Fig. 10. The percentage of these types are variable with the concentration and duration of treatment. These types included micro-nuclei at interphase, irregular prophase, disturbed-metaphase, sticky metaphase, sticky at different stages. Also other abnormalities were recorded, like lagging chromosome at metaphase, forward chromosome at ...