Dr. S. Ahmed John, Head of the Department, PG and Research Department of Botany, Jamal Mohamed College, Tiruchirappalli 620 020, India, Molecular Genetics, Graduated from Botany Department University of Madras in 1981, Post Graduated from Botany Annamali University in 1983, Master of Philosophy from Botany Annamali University in 1985, Doctor of Philosophy from Botany, Bharathidasan University in 1991, Now he has published 204 Research papers in the International journals with 227.928 Impact factor, Citation Index 22957 h Index 59, i10 Index 545 and presented 106 papers in the International/National seminars and conducted 10 UGC Sponsored National Seminars. He has 32 years of Teaching and 33 years of Research Experience in Molecular Genetics. He produced 34 Ph.D and 75 M.Phil. Under his guidance 5 Ph.D pursuing. He is the recognized Ph.D Research Advisor of Botany, Biotechnology, Biochemistry and Microbiology for 9 Universities He is the Editorial Board Member and Reviewer for 31 International and National Journals. He has the Chair person for 15 UGC Sponsored National Seminars. He has the Chairman for Board of Studies, Convener for Curriculum Development Cell, Member of Academic Council, Co-ordinator for Extracurricular and Extension Activities and Chairman for Department Research Committee. He was Awarded Best NSS Officer in 1992 and Best research paper award in 2015.. He presented Papers in the International conference in Nepal(1992), Israel(1996), Palestine(1996) ,Jordan(1996), Singapore(1999), Australia(1999), France(2002), China(2009), Saudi Arabia(2010). In recent year he focused on Biochemistry and molecular genetics of Marine resources and got some important success.