Boulila Moncef, Molecular Evolutionary Characteristics of the 2019 Novel Coronavirus (SARS-CoV-2) Contracted by Tunisian Citizens : Comparison and Relationship to Other Human and Animal Coronaviruses Based on Spike Glycoprotein-Coding Gene Sequences Analysis, International Journal of Coronaviruses, Volume 2, Issue 4, 2021, Pages 9-44, ISSN 2692-1537, https://doi.org/10.14302/issn.2692-1537.ijcv-21-3756. (http://oap-bioscience.orgijcv/article/1593) Keywords: evolution; recombination; gene duplication; selective pressure; phylogeny; coronaviruses; SARS-CoV-2