Nels and Vincent review three aspects of SARS-CoV-2: phylogenetics of Omicron, a two-step fitness selection for variants, and putative RNA insertions from host genomes. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Two-step fitness selection for SARS-CoV-2 variants (Cell Rep) Host origins of SARS-CoV-2 genome insertions (Virological) Time stamps by Jolene. Thanks! Science Picks Nels – Plant virus satellite accelerates wing formation in insect Vincent – A plant virus that switched to vertebrates Music on TWiEVO is performed by Trampled by Turtles Send your evolution questions and comments to twievo@microbe.tv