Question

How do viruses mutate and evolves??

Answer 1

Viruses mutate and evolve due to errors during replication, co-infection and transmission, and these mutations affect their ability to infect cells and evade the immune system. Point mutations are the most common form and can lead to significant changes. Influenza and HIV are examples of viruses that mutate frequently due to their nature. Over time, viruses that are better adapted will become more prevalent, leading to the evolution of new strains. 

Answer 2

A virus's genes experience random "copying errors" when it multiplies. These genetic copying errors can cause changes in the virus's surface protein or antigens over time, among other things.

Answer 3

Viruses mutate and evolve through a process called genetic drift. Genetic drift is a random process in which a virus's genetic material is changed due to random events, such as errors in replication or the incorporation of foreign genetic material. These changes can result in the virus becoming more or less virulent, and can lead to the evolution of new and different strains of the virus.