the virus-first hypothesis states that viruses ... developed the ability to infect the first cells. Could today's single-stranded RNA viruses be descendants of these precellular RNA molecules?

These viruses have only the capsid surrounding their genetic material. A virus budding from a host cell membrane. This sequence of steps forms the virus’s envelope. A host is an organism that a ...

Following this, the virus injects its genetic material into ... The outcome depends on how many phages are simultaneously infecting the cell. A single phage causes lysis, while infection by ...

The Sudan virus, a close relative of Ebola, has a fatality rate of 50% but remains poorly understood in terms of how it ...