Virus: Structure and Classification (Part 2)

Lesson 5 of 12 • 24 upvotes • 13:56mins

Aishwarya G Iyer

This lesson describes about the three main theories speculated on the origins of viruses - Regressive theory , cellular origin theory and coevolution theory. I have also talked about the problems with these theories . I have explained about the characteristics of a virus , made a comparison of a virus with a cell for a better understanding ,discussed about the size of the virus and the techniques used to stain the structure of a virus , tools for studying structure & discussed about the structural symmetries of different viruses - Icosohedral , enveloped Icosohedral , helical , enveloped helical.