Figure 1: Genotoxic damages observe in meristematic cells of the Allium cepa roots treated with the Black Dye Commercial Product. A. Polyploidized intherphasic nucleus; B. Prophase with genetic material loss; C. Chromosome adherence; D-F. C-metaphases; G, I, J. Chromosome losses; H. Chromosome bridges (arrow) and chromosome fragment (arrow head); L. Multipolar anaphase.