dogs can contract coronavirus how can we know if the virus hasalready been present in dog populations versus the situation of anovel infection in dogs. imagine two evolutionary scenarios for theevolution of coronavirus: one were coronavirus originated in dogsand jump to humans and one where the coronavirus originated inhumans and jumped to dogs. draw two simplified phylogeny's thatreflect these two scenarios. which of these two phylogeny's docurrent COVID-19 data sets support?
