Prof. Ahmed Rebai received his engineer degree in Statistical Genetics in 1991 from the Institut National Agronomique de Paris-Grignon, France and his PhD from the same university in 1995 on developing methods and computational tools for genetic mapping. He is full-professor of Bioinformatics and laboratory director at the Centre of Biotechnology of Sfax (CBS) since 2008. Dr. Rebai published more than 200 journal articles, edited one book and filed three patents. According of Scopus database, Dr Rebai has 2364 citations in scientific publications and his Hirsch index is 28. Dr Rebai was awarded the National Medal (4th category) of The Tunisian Republic in Science and Education in 2006. His recent work in evolutionary biology includes the conservation of charge clusters in eukaryotic and prokaryotic proteomes and their functional annotation.