 The c-myc gene is normally turned off in the cell; however when it is turned on it is able to push the cell into the G1 phase of the cell cycle and cause the cell to begin replication, causing unchecked cell proliferation while allowing the viral gene to be replicated.After many replications where the viral gene stays latent tumours begin to grow.These tumours are normally derived from one mutated/transformed cell (clonal in origin).