Prof. J.O. Jung’a worked as Molecular geneticist Research Scientist at the Institute of Primate Research, National Museums of Kenya for twenty years rising to the level of Senior Scientist in 2004. At the National Museums of Kenya, Prof. Jung’a conducted a great member of research studies on the genetics of African Wildlife large mammal species, before changing interest to study the mechanisms involved in cell growth and death in aquatic species due to environmental stress toxicants.