ksuadminMay 2, 2021 We started the month with another special participation here on the blog. This time the author of the guest contribution is Professor Milton Groppo, coordinator of the Graduate Program in Comparative Biology at the Department of Biology of the USP in Ribeirão Preto. He explains how the emergence of Covid-19 opens a window to understanding the evolutionary process in real time. To find out more, just read his text below. ————————– The Covid-19 pandemic caused by Sars-CoV-2 (technical name for a type of coronavirus) has been going on for over a year. The deaths and overcrowded intensive care units, the discussion of restrictive measures, hygiene measures, which mask is the best, which vaccine is best suited, agglomeration or not and everything that has to do with Covid has dominated the news in all media worldwide.