There are several genetic structures among families of viruses and each one has an appropriate life cycle.
Hi Davod,
I agree with Nadine above....this is not limited to viruses alone...if your see all organisms such a diversity exists everywhere...and is outcome of millions of years of evolution wit interplay of several factors viz., selections, mutations, etc. and finally resulting into the survival of the fittest in this competitive world..
Hi Ajay,
Thank you and Nadine. You're right i think so but it appears that if it's evolution, today we must infect only with one form of virus. nowdays there is at least 7 viral genetic structure which may existed before and later so, all these form work properly if dsDNA, if ssDNA, gaped, defective, ssRNA, dsRNA, segmented, linear, circular and etc. all these form can initiate an infectoin and produce more, so i think it may be anything beyond the evolution that depend on viral genetic form, tissue tropism, virulence and pathogenesis...
thanks again
Hi,
I think this issue is related to the theories of virus evolution as one of the 3 theories says that viruses may have evolved from bits of DNA or RNA that "escaped" from the genes of a larger organism. Accordingly, viruses of insects, fish, elephants, sheep, goat or humans evolved from these species and this why they are genetically diverse.
- Badges
- Science topic
- Similar topics
- Biological Science
- Genetics
- Genetic Analysis