Genetics is tracing the descent of modern organisms using the fossil retrovirus insertions found in their genomes. Mutation and natural selection play major roles in HIV and influenza research.
And those are major pieces of the puzzle. It has allowed us to not only cure HIV but also Influenza.
Sorry, that kind of response will get me flushed in the great collander.
It does not seem that useful still. Genetics is pretty cool but aren't we making more advances with our intelligent designer stuff? I certainly read about it more.
DK