Oncogenic viruses Oncogenic viruses are genetically unstable. have no effect on the host cell. are lytic viruses that kill the host cell. cause tumors to develop. cause acute infections.

cause tumors to develop.

Explanation:

Oncogenic viruses are viruses that do not kill or lyses the cells of the host outright but has the capacity to cause to cause a long term infections that may eventually lead to the formation of tumor or cancerous cells within the body of their hosts.

Hence, the fourth option is the correct option. That is, they cause tumors to develop

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?