The recent outbreak of an unusual viral pneumonia in Wuhan, China, and then a pandemic has created a panic world over. Genetic and Phylogenetic studies revealed that the causative virus is SARC-CoV-2 and the disease it caused is given the name COVID-19. It (Coronavirus) is a member of the family Coronaviridae and subfamily Coronavirinae and belongs to the order Nidovirales. The Coronavirus Study Group of the International Committee on Taxonomy of Viruses termed the virus as SARS-CoV-2. The virus enters into the cell through ACE2 receptors. It is important to understand the basics of genetic and Phylogenetic properties of the virus. This knowledge will ultimately help in the development of vaccines and drug treatment. In this article, an effort is made to explain the basics of coronavirus and its transmission, to the host cell.