|Mutagenesis is the process by which the a particular base pair in a genome is completely changes, in simple that the particular genome changed, mutated. This mutation can be a spontaneous reaction or a induced reaction. Certain mutation is helpful for the organism to adjust itself to its habitat while certain result in cancerous growth. This is because; the mutation in genome can result in the formation of a truncated protein. These proteins either switch off or on the essential pathways resulting in cancerous growth. The top open access journals are peer reviewed scholarly journals of Mutagenesis. The top open access journals are freely available on the public internet domain, allowing any end users to read, download, copy, distribute, prink, search or link to the full texts of the articles. These provide high quality, meticulously reviewed and rapid publication, to cater the insistent need of scientific community. These journals are indexed with all their citations noted. The top open access journals are indexed in MEDLINE, PUBMED, SCOPUS, COPERNICUS, CAS, EBSCO and ISI.