C. Sathya & M. N. Abubacker 2023. Analyzing the Genotoxic Effect of Heavy Metals Cr, Cu, Pb and Zn Using Allium cepa L. Current Topics on Chemistry and Biochemistry Vol. 9. (Feb. 2023), 47–56. DOI:https://doi.org/10.9734/bpi/ctcb/v9/18442D.