Are viruses created?
According to this hypothesis, viruses originated through a progressive process.
Mobile genetic elements, pieces of genetic material capable of moving within a genome, gained the ability to exit one cell and enter another..
How does a virus become active?
The genome of a virus that causes latent infection of cells must be transcribed and translated into viral proteins. This occurs when the virus is reactivated from a latent stage to a lytic stage. Certain viral genes that are specific to each virus initiate this reactivation process.
What are 5 characteristics of a virus?
CharacteristicsNon living structures.Non-cellular.Contain a protein coat called the capsid.Have a nucleic acid core containing DNA or RNA (one or the other – not both)Capable of reproducing only when inside a HOST cell.
What are active viruses?
With an active viral infection, a virus makes copies of itself and bursts the host cell (killing it) to set the newly-formed virus particles free. In other cases, virus particles “bud” off the host cell over a period of time before killing the host cell.